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Convert dog years to human years.

Convert cat years to human years.

Estimate daily calories for a dog.

Calculate aquarium volume.

Age converter for small dog breeds.

Cat to human age converter.

MRR = new + expansion − contraction − churn.

ARR = MRR · 12.

Rev churn = (churn+contraction)/start·100.

NRR = (start+exp−contr−churn)/start.

GRR = (start−contr−churn)/start.

LTV/CAC = (ARPU·margin/churn)/CAC.

Payback = CAC/(ARPU·margin).

Revenue = customers · AOV.

Price = unit cost / (1 − target margin).

ε = %ΔQd / %ΔP.

ε = %ΔQs / %ΔP.

ε = %ΔQa / %ΔPb.

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Etsy Fee Calculator — ecommerce long-tail query, instant estimate.

Amazon FBA Profit Calculator — ecommerce long-tail query, instant estimate.

eBay Fee Calculator — ecommerce long-tail query, instant estimate.

PayPal Fee Calculator — ecommerce long-tail query, instant estimate.

Stripe Fee Calculator — ecommerce long-tail query, instant estimate.

Square Fee Calculator — ecommerce long-tail query, instant estimate.

Merchant Fee Calculator — ecommerce long-tail query, instant estimate.

Marketplace Fee Calculator — ecommerce long-tail query, instant estimate.

Shipping Profit Calculator — ecommerce long-tail query, instant estimate.

Free Shipping Threshold Calculator — ecommerce long-tail query, instant estimate.

Return Rate Calculator — ecommerce long-tail query, instant estimate.

Refund Rate Calculator — ecommerce long-tail query, instant estimate.

Chargeback Rate Calculator — ecommerce long-tail query, instant estimate.

Inventory Carrying Cost Calculator — business long-tail query, instant estimate.

Economic Order Quantity Calculator — business long-tail query, instant estimate.

Safety Stock Calculator — business long-tail query, instant estimate.

Stockout Cost Calculator — business long-tail query, instant estimate.

Sell-Through Rate Calculator — business long-tail query, instant estimate.

Average Order Value Calculator — business long-tail query, instant estimate.

Customer Retention Rate Calculator — business long-tail query, instant estimate.

Repeat Purchase Rate Calculator — business long-tail query, instant estimate.

Gross Merchandise Value Calculator — business long-tail query, instant estimate.

Take Rate Calculator — business long-tail query, instant estimate.

Platform Commission Calculator — business long-tail query, instant estimate.

Marketplace Break-Even Calculator — business long-tail query, instant estimate.

Unit Economics Calculator — business long-tail query, instant estimate.

Gross Margin Return on Inventory Calculator — business long-tail query, instant estimate.

SKU Profitability Calculator — business long-tail query, instant estimate.

Product Launch Budget Calculator — business long-tail query, instant estimate.

Preorder Revenue Calculator — business long-tail query, instant estimate.

Crowdfunding Goal Calculator — business long-tail query, instant estimate.

Kickstarter Fee Calculator — business long-tail query, instant estimate.

Patreon Earnings Calculator — creator long-tail query, instant estimate.

Membership Revenue Calculator — business long-tail query, instant estimate.

Paid Community Revenue Calculator — business long-tail query, instant estimate.

Course Pricing Calculator — business long-tail query, instant estimate.

Coaching Package Pricing Calculator — business long-tail query, instant estimate.

Agency Retainer Calculator — business long-tail query, instant estimate.

Agency Utilization Calculator — business long-tail query, instant estimate.

Billable Hours Calculator — business long-tail query, instant estimate.

Blended Rate Calculator — business long-tail query, instant estimate.

Revenue per Visitor Calculator — business long-tail query, instant estimate.

Cart Abandonment Calculator — ecommerce long-tail query, instant estimate.

Checkout Conversion Calculator — ecommerce long-tail query, instant estimate.

Burn Multiple Calculator — business long-tail query, instant estimate.

Rule of 40 Calculator — business long-tail query, instant estimate.

SaaS Magic Number Calculator — business long-tail query, instant estimate.

SaaS Quick Ratio Calculator — business long-tail query, instant estimate.

Expansion MRR Calculator — business long-tail query, instant estimate.

Logo Churn Calculator — business long-tail query, instant estimate.

Net Dollar Retention Calculator — business long-tail query, instant estimate.

Average Revenue per Account Calculator — business long-tail query, instant estimate.

Trial Conversion Calculator — business long-tail query, instant estimate.

Freemium Conversion Calculator — business long-tail query, instant estimate.

Activation Rate Calculator — business long-tail query, instant estimate.

Product Qualified Lead Calculator — business long-tail query, instant estimate.

Sales Cycle Length Calculator — business long-tail query, instant estimate.

Pipeline Coverage Calculator — business long-tail query, instant estimate.

Win Rate Calculator — business long-tail query, instant estimate.

Quota Attainment Calculator — business long-tail query, instant estimate.

Commission Draw Calculator — business long-tail query, instant estimate.

Territory Capacity Calculator — business long-tail query, instant estimate.

AI Token Cost Calculator — AI long-tail query, instant estimate.

LLM API Cost Calculator — AI long-tail query, instant estimate.

Chatbot Cost Calculator — AI long-tail query, instant estimate.

Prompt Cost Calculator — AI long-tail query, instant estimate.

Embedding Cost Calculator — AI long-tail query, instant estimate.

Vector Database Storage Calculator — AI long-tail query, instant estimate.

Fine-Tuning Cost Calculator — AI long-tail query, instant estimate.

Batch API Savings Calculator — AI long-tail query, instant estimate.

Inference Latency Calculator — AI long-tail query, instant estimate.

GPU Hour Cost Calculator — cloud long-tail query, instant estimate.

Cloud Compute Cost Calculator — cloud long-tail query, instant estimate.

Serverless Cost Calculator — cloud long-tail query, instant estimate.

API Rate Limit Calculator — developer long-tail query, instant estimate.

API Pagination Calculator — developer long-tail query, instant estimate.

Webhook Retry Calculator — developer long-tail query, instant estimate.

Database Storage Cost Calculator — developer long-tail query, instant estimate.

Cloud Egress Cost Calculator — cloud long-tail query, instant estimate.

CDN Bandwidth Cost Calculator — cloud long-tail query, instant estimate.

Image Optimization Savings Calculator — developer long-tail query, instant estimate.

Compression Savings Calculator — developer long-tail query, instant estimate.

Log Storage Cost Calculator — developer long-tail query, instant estimate.

Observability Cost Calculator — developer long-tail query, instant estimate.

Uptime SLA Credit Calculator — developer long-tail query, instant estimate.

Error Budget Calculator — developer long-tail query, instant estimate.

SLO Calculator — developer long-tail query, instant estimate.

Incident Cost Calculator — developer long-tail query, instant estimate.

Code Review Time Calculator — developer long-tail query, instant estimate.

Pull Request Cycle Time Calculator — developer long-tail query, instant estimate.

Deployment Frequency Calculator — developer long-tail query, instant estimate.

Lead Time for Changes Calculator — developer long-tail query, instant estimate.

DORA Metrics Calculator — developer long-tail query, instant estimate.

Cache Hit Rate Calculator — developer long-tail query, instant estimate.

Database Query Cost Calculator — developer long-tail query, instant estimate.

Cold Start Cost Calculator — developer long-tail query, instant estimate.

API Error Rate Calculator — developer long-tail query, instant estimate.

Queue Throughput Calculator — developer long-tail query, instant estimate.

Autoscaling Cost Calculator — cloud long-tail query, instant estimate.

Reserved Instance Savings Calculator — cloud long-tail query, instant estimate.

Kubernetes Node Cost Calculator — cloud long-tail query, instant estimate.

Container Memory Cost Calculator — cloud long-tail query, instant estimate.

Apprenticeship Wage Calculator — career long-tail query, instant estimate.

Internship Hourly Pay Calculator — career long-tail query, instant estimate.

Salary Raise Calculator — career long-tail query, instant estimate.

Promotion Pay Increase Calculator — career long-tail query, instant estimate.

Job Offer Comparison Calculator — career long-tail query, instant estimate.

Relocation Salary Calculator — career long-tail query, instant estimate.

Commute Salary Adjustment Calculator — career long-tail query, instant estimate.

Remote Work Savings Calculator — career long-tail query, instant estimate.

Unpaid Internship Cost Calculator — career long-tail query, instant estimate.

Certification ROI Calculator — career long-tail query, instant estimate.

Learning ROI Calculator — career long-tail query, instant estimate.

PTO Accrual Calculator — hr long-tail query, instant estimate.

Vacation Accrual Calculator — hr long-tail query, instant estimate.

Sick Leave Accrual Calculator — hr long-tail query, instant estimate.

Holiday Pay Calculator — hr long-tail query, instant estimate.

Shift Differential Calculator — hr long-tail query, instant estimate.

On-Call Pay Calculator — hr long-tail query, instant estimate.

Payroll Garnishment Calculator — hr long-tail query, instant estimate.

Unemployment Benefit Estimate Calculator — hr long-tail query, instant estimate.

Workers Compensation Rate Calculator — hr long-tail query, instant estimate.

Notice Period Calculator — hr long-tail query, instant estimate.

Redundancy Pay Calculator — hr long-tail query, instant estimate.

Sick Pay Calculator — hr long-tail query, instant estimate.

Maternity Leave Pay Calculator — hr long-tail query, instant estimate.

Parental Leave Pay Calculator — hr long-tail query, instant estimate.

Wage Theft Calculator — hr long-tail query, instant estimate.

Timesheet Rounding Calculator — hr long-tail query, instant estimate.

Employee Turnover Cost Calculator — hr long-tail query, instant estimate.

Sponsorship Value Calculator — creator long-tail query, instant estimate.

Podcast Sponsorship Calculator — creator long-tail query, instant estimate.

Newsletter Sponsorship Calculator — creator long-tail query, instant estimate.

Creator Membership Calculator — creator long-tail query, instant estimate.

Affiliate Commission Calculator — creator long-tail query, instant estimate.

Link-in-Bio Conversion Calculator — creator long-tail query, instant estimate.

Creator Media Kit Rate Calculator — creator long-tail query, instant estimate.

Content Production Cost Calculator — creator long-tail query, instant estimate.

Video Editing Cost Calculator — creator long-tail query, instant estimate.

Thumbnail CTR Calculator — creator long-tail query, instant estimate.

RAG Cost Calculator — instant ai estimate with editable inputs.

RAG Chunking Calculator — instant ai estimate with editable inputs.

Context Window Cost Calculator — instant ai estimate with editable inputs.

Prompt Caching Savings Calculator — instant ai estimate with editable inputs.

AI Agent Run Cost Calculator — instant ai estimate with editable inputs.

AI Voice Minutes Cost Calculator — instant ai estimate with editable inputs.

Speech-to-Text Cost Calculator — instant ai estimate with editable inputs.

Text-to-Speech Cost Calculator — instant ai estimate with editable inputs.

AI Image Batch Cost Calculator — instant ai estimate with editable inputs.

AI Video Generation Cost Calculator — instant ai estimate with editable inputs.

AI Evaluation Cost Calculator — instant ai estimate with editable inputs.

Synthetic Data Cost Calculator — instant ai estimate with editable inputs.

Labeling Cost Calculator — instant ai estimate with editable inputs.

Human Review Cost Calculator — instant ai estimate with editable inputs.

Moderation Cost Calculator — instant ai estimate with editable inputs.

Vector Embedding Dimension Calculator — instant ai estimate with editable inputs.

Vector Index Memory Calculator — instant ai estimate with editable inputs.

Vector Search Latency Calculator — instant ai estimate with editable inputs.

Reranking Cost Calculator — instant ai estimate with editable inputs.

Prompt Compression Savings Calculator — instant ai estimate with editable inputs.

Model Routing Savings Calculator — instant ai estimate with editable inputs.

Fine-Tune Dataset Token Calculator — instant ai estimate with editable inputs.

Fine-Tune Training Time Calculator — instant ai estimate with editable inputs.

GPU Memory Requirement Calculator — instant ai estimate with editable inputs.

Transformer FLOPs Calculator — instant ai estimate with editable inputs.

Inference Throughput Calculator — instant ai estimate with editable inputs.

Batch Size Memory Calculator — instant ai estimate with editable inputs.

Quantization Memory Savings Calculator — instant ai estimate with editable inputs.

LoRA Parameter Calculator — instant ai estimate with editable inputs.

Model Download Time Calculator — instant estimate with editable inputs.

Server Cost per User Calculator — instant estimate with editable inputs.

Cloud Storage Lifecycle Savings Calculator — instant estimate with editable inputs.

Object Storage Request Cost Calculator — instant estimate with editable inputs.

Database Read Unit Calculator — instant estimate with editable inputs.

Database Write Unit Calculator — instant estimate with editable inputs.

Redis Memory Cost Calculator — instant estimate with editable inputs.

Message Queue Cost Calculator — instant estimate with editable inputs.

Email API Cost Calculator — instant estimate with editable inputs.

SMS API Cost Calculator — instant estimate with editable inputs.

Push Notification Cost Calculator — instant estimate with editable inputs.

Map API Cost Calculator — instant estimate with editable inputs.

Geocoding API Cost Calculator — instant estimate with editable inputs.

Authentication MAU Cost Calculator — instant estimate with editable inputs.

Feature Flag Cost Calculator — instant estimate with editable inputs.

A/B Test Sample Runtime Calculator — instant estimate with editable inputs.

Canary Deployment Risk Calculator — instant estimate with editable inputs.

Blue Green Deployment Cost Calculator — instant estimate with editable inputs.

Build Minutes Cost Calculator — instant estimate with editable inputs.

CI Runner Cost Calculator — instant estimate with editable inputs.

Test Flakiness Rate Calculator — instant estimate with editable inputs.

Bug Escape Rate Calculator — instant estimate with editable inputs.

Defect Density Calculator — instant estimate with editable inputs.

Technical Debt Interest Calculator — instant estimate with editable inputs.

Refactor ROI Calculator — instant estimate with editable inputs.

Developer Productivity Cost Calculator — instant estimate with editable inputs.

Engineering Headcount Calculator — instant estimate with editable inputs.

Sprint Capacity Calculator — instant estimate with editable inputs.

Story Point Velocity Calculator — instant estimate with editable inputs.

Backlog Burnup Calculator — instant estimate with editable inputs.

Support Ticket Cost Calculator — instant estimate with editable inputs.

Support SLA Breach Calculator — instant estimate with editable inputs.

Customer Support Staffing Calculator — instant estimate with editable inputs.

Help Desk Cost per Ticket Calculator — instant estimate with editable inputs.

API Monetization Calculator — instant estimate with editable inputs.

API Pricing Calculator — instant estimate with editable inputs.

Webhook Delivery Rate Calculator — instant estimate with editable inputs.

Database Migration Downtime Calculator — instant estimate with editable inputs.

Data Warehouse Cost Calculator — instant estimate with editable inputs.

ETL Job Cost Calculator — instant estimate with editable inputs.

Backup Storage Cost Calculator — instant estimate with editable inputs.

Convert binary string to decimal number.

Convert hexadecimal to decimal.

Convert decimal to binary string.

Convert decimal to hexadecimal.

Encode text to Base64.

Encode text for URL usage.

Format minified JSON.

Entropy = length·log2(pool).

Calculate dimensions based on aspect ratio.

Antipode latitude = −lat.

Bearing 0–360°.

Energy(J) = 10^(1.5·M + 4.8).

Haversine distance (km).

Volume(L) = area(m²)·mm.

Snow(cm) = rain(mm)·ratio/10.

Safe minutes = (MED · SPF) / UV.

WC = 13.12+0.6215T−11.37V^0.16+0.3965T·V^0.16 (°C,km/h).

Estimate time to mow a lawn.

Calculate mulch needed for a garden bed.

Calculate soil volume for garden beds.

Estimate life expectancy based on basic factors.

Calculate number of tiles needed.

Calculate concrete volume.

Mbps = MB·8/sec.

BDP (bits) = bw(bps)·RTT(s).

Encoded length = ⌈n/3⌉·4.

Baud = bitrate/bits per symbol.

Time = size/speed.

Seconds = MB·8/Mbps.

32-bit decimal of A.B.C.D.

Subnets = 2^(prefix−base).

GB/h = Mbps·3600/8000.

Seconds = MB·8/Mbps.

Uptime% = up/(up+down)·100.

Calculate water for coffee beans.

CBM = L·W·H (m).

Boxes = container vol / box vol.

DimW(kg) = L·W·H(cm)/5000.

DPMO = defects/(units·opps)·1e6.

Density = weight(lb)/volume(ft³).

Cases = ⌊pallet/(case L·W)⌋.

ROP = avg daily · lead time + safety.

Takt = available time / demand.

Revenue = impressions/1000·CPM·fill·(1−fee).

Earnings = views/1000·RPM·monetized.

Earnings = views/1000·RPM.

Rate = followers · engagement · multiplier.

Ad rev = opens/1000·CPM.

Open % = opens/delivered·100.

Conv = conversions/delivered·100.

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MER Calculator — marketing long-tail query, instant estimate.

Dropshipping Profit Calculator — instant ecom estimate with editable inputs.

Print-on-Demand Profit Calculator — instant ecom estimate with editable inputs.

TikTok Shop Fee Calculator — instant ecom estimate with editable inputs.

Walmart Marketplace Fee Calculator — instant ecom estimate with editable inputs.

Amazon Referral Fee Calculator — instant ecom estimate with editable inputs.

Amazon Storage Fee Calculator — instant ecom estimate with editable inputs.

FBA Dimensional Weight Calculator — instant ecom estimate with editable inputs.

FBA Reorder Quantity Calculator — instant ecom estimate with editable inputs.

Minimum Advertised Price Calculator — instant ecom estimate with editable inputs.

Wholesale Price Calculator — instant ecom estimate with editable inputs.

Retail Markup Calculator — instant ecom estimate with editable inputs.

Distributor Margin Calculator — instant ecom estimate with editable inputs.

Landed Cost per Unit Calculator — instant ecom estimate with editable inputs.

Import Landed Cost Calculator — instant ecom estimate with editable inputs.

Duties and Taxes Landed Cost Calculator — instant ecom estimate with editable inputs.

Cart Recovery Revenue Calculator — instant ecom estimate with editable inputs.

Abandoned Cart Email ROI Calculator — instant ecom estimate with editable inputs.

Email List Value Calculator — instant ecom estimate with editable inputs.

SMS Marketing ROI Calculator — instant ecom estimate with editable inputs.

Push Notification ROI Calculator — instant ecom estimate with editable inputs.

Influencer Campaign ROI Calculator — instant ecom estimate with editable inputs.

Affiliate Program ROI Calculator — instant ecom estimate with editable inputs.

Referral Program ROI Calculator — instant ecom estimate with editable inputs.

Loyalty Program ROI Calculator — instant ecom estimate with editable inputs.

Coupon Profit Calculator — instant ecom estimate with editable inputs.

Discount Margin Impact Calculator — instant ecom estimate with editable inputs.

Bundle Pricing Calculator — instant ecom estimate with editable inputs.

BOGO Profit Calculator — instant ecom estimate with editable inputs.

Subscription Box Profit Calculator — instant ecom estimate with editable inputs.

Subscription Churn Profit Calculator — instant ecom estimate with editable inputs.

Preorder Cash Flow Calculator — instant ecom estimate with editable inputs.

Backorder Cost Calculator — instant ecom estimate with editable inputs.

Return Shipping Cost Calculator — instant ecom estimate with editable inputs.

Packaging Cost Calculator — instant ecom estimate with editable inputs.

Pick and Pack Cost Calculator — instant ecom estimate with editable inputs.

Fulfillment Cost Calculator — instant ecom estimate with editable inputs.

Warehouse Storage Cost Calculator — instant ecom estimate with editable inputs.

3PL Cost Calculator — instant ecom estimate with editable inputs.

Dropshipping Break-Even Calculator — instant ecom estimate with editable inputs.

TikTok Ads Break-Even Calculator — instant ecom estimate with editable inputs.

Meta Ads Budget Calculator — instant ecom estimate with editable inputs.

Google Ads CPA Calculator — instant ecom estimate with editable inputs.

YouTube Ads CPV Calculator — instant ecom estimate with editable inputs.

LinkedIn Ads CPL Calculator — instant ecom estimate with editable inputs.

Pinterest Ads ROI Calculator — instant ecom estimate with editable inputs.

Amazon Ads ACOS Calculator — instant ecom estimate with editable inputs.

TACOS Calculator — instant ecom estimate with editable inputs.

MER Break-Even Calculator — instant ecom estimate with editable inputs.

Blended CAC Calculator — instant ecom estimate with editable inputs.

Attribution Revenue Calculator — instant ecom estimate with editable inputs.

First-Touch Attribution Calculator — instant ecom estimate with editable inputs.

Last-Touch Attribution Calculator — instant ecom estimate with editable inputs.

Multi-Touch Attribution Calculator — instant ecom estimate with editable inputs.

Marketing Mix Budget Calculator — instant ecom estimate with editable inputs.

Content ROI Calculator — instant ecom estimate with editable inputs.

Blog Revenue Calculator — instant ecom estimate with editable inputs.

SEO Traffic Value Calculator — instant ecom estimate with editable inputs.

Keyword ROI Calculator — instant ecom estimate with editable inputs.

Organic Traffic Forecast Calculator — instant ecom estimate with editable inputs.

Backlink Value Calculator — instant ecom estimate with editable inputs.

Webinar Conversion Calculator — instant ecom estimate with editable inputs.

Demo Booking Rate Calculator — instant ecom estimate with editable inputs.

Lead Magnet Conversion Calculator — instant ecom estimate with editable inputs.

Sponsorship CPM Calculator — instant ecom estimate with editable inputs.

Brand Deal Calculator — instant ecom estimate with editable inputs.

UGC Creator Rate Calculator — instant ecom estimate with editable inputs.

Creator Licensing Fee Calculator — instant ecom estimate with editable inputs.

Music Streaming Revenue Calculator — instant ecom estimate with editable inputs.

Book Royalty Calculator — instant ecom estimate with editable inputs.

KDP Royalty Calculator — instant ecom estimate with editable inputs.

Audiobook Royalty Calculator — instant ecom estimate with editable inputs.

Dehumidifier Size Calculator — home long-tail query, instant estimate.

Humidifier Size Calculator — home long-tail query, instant estimate.

Whole House Fan Calculator — home long-tail query, instant estimate.

EV vs Gas Cost Calculator — auto long-tail query, instant estimate.

EV Charging Time Calculator — auto long-tail query, instant estimate.

EV Charging Station ROI Calculator — auto long-tail query, instant estimate.

EV Battery Degradation Calculator — auto long-tail query, instant estimate.

Level 2 Charger Cost Calculator — auto long-tail query, instant estimate.

Bytes = sample·channels·bits·sec/8.

BPM = beats/min.

Major chord = root + 4 + 7 semitones.

Returns interval between two notes.

Inverted root = (root+offset)%12.

I-IV-V-I root sequence sum (illustrative).

New root = (root+semitones)%12.

ms = 60000/BPM·divisor.

Distance = scale·(1−1/2^(fret/12)).

T = (2·L·f)²·μ (μ=mass/length, simplified).

fn = n·f1.

Sharps/flats per circle of fifths.

Sec = beats·60/BPM.

Semitones between two MIDI notes.

Major scale 2nd = root+2.

new = (note+semis)%12.

f = 440·2^((n−69)/12).

L = (23562·r²)/(Fb²·Vb) − 1.463·r (cm).

Simplified port length formula.

f2 = f1·2^(s/12).

Volume = W·H·D (L).

Range = high − low (semitones).

Mars age = Earth age/1.881.

θ = arcsin(width/length).

Volume(L) = L·W·H(cm)/1000.

t(mm) ≈ height(cm)·safety/100.

Cipher = (plain+shift)%26.

Total min = applicants·(screen+interview).

Zeller's congruence (0=Sat..6=Fri).

Carat ≈ d³·0.0061 (round).

Adjusted XP = monsters·avgXP·mult (1.5).

ER = engagements/reach·100.

Hoist:Fly = 1:1.9. Returns fly.

Gap = (m−f)/m·100.

Difference = expert − (fresher + training).

HP = level·(avg die + CON mod).

Profit ≈ stake·(odds−1)−liability.

Words/day = 50000/days left.

Min = (tank_psi−safety)·factor/flow.

Gap% = (a−b)/a·100.

E = (O+4M+P)/6.

Tip = max(5, bill·15%).

Cost: 1pt per up to 13, 2pts above.

EV = P_win·win − P_lose·lose.

Pot odds = call/(pot+call).

RPM = rounds·60/sec.

Flour:salt:water = 2:1:1 (cups).

Sand (kg) = L·W·D(m)·1600.

Optimal stop = ⌈n/e⌉.

Earnings = streams · $/stream.

Tip = bill·tip%.

Tip = (bill−tax)·tip%.

Total = miles·rate + lodging + meals.

Time = frames · seconds/frame.

Returns w/h ratio.

Shots = ⌈x/(1−p)^n⌉ for p=0.05.

FoV = 2·atan(sensor/(2·focal)) (deg).

(L1+0.05)/(L2+0.05).

43.27/diagonal(mm).

Approx DoF ≈ 2·N·c·d²/f².

EV = log2(N²/t).

Shots per roll = length(mm)/24 mm.

f = sensor/(2·tan(FoV/2)).

Seconds = frames/fps.

H = f²/(N·c) + f (mm).

Bytes = W·H·bpp/8.

Simplified ratio w:h (= w/gcd).

M = image/object.

Print (in) = pixels/DPI.

PPI = √(W²+H²)/diagonal.

Screen width = distance/throw ratio.

Pixel scale = scale%.

Width = diag·cos(atan(h/w)).

Rule of thumb: 1/(focal·crop).

Frames = sec·fps.

Final length = shots/fps.

Center height ≈ seated eye level (in).

Optimal distance ≈ diagonal·1.5 (in).

VE = vertical scale / horizontal scale.

Bytes = bitrate·duration/8.

Pixels = W·H.

Calculate density from mass and volume.

Calculate force using F = ma.

Calculate kinetic energy.

Calculate Voltage, Current, or Resistance.

Calculate power (Watts).

Calculate Words Per Minute based on characters and time.

Estimate words from character count.

Estimate time to read a document.

Height = width·10/16.

Height = width·9/16.

Height = width·3/4.

Carat = grams/0.2.

Padding-top % = h/w·100.

Days = (266 − day_of_year + 365)%365.

Days = (45 − doy + 365)%365.

Carat ≈ d³·0.0061 (round).

Parity bit = (#ones)%2.

Carat ≈ d³·0.0061.

Days = 365 − doy.

Parity = 1 − (#ones %2).

Even parity = ones %2.

PAR = display AR · pixel H / pixel W.

Width = height·9/16.

Ratio = w/h.

Grade = (target_year − birth_year) − 6.

Lights = height(ft)·100.

Days from today's day-of-year to Dec 25.

Year mod 19 (Golden number − 1).

Days = log2(humans/initial).

Days since Mayan epoch (approx).

Success% ≈ 100·0.92^weeks.

Snow needed (kg) = π/6·Σdi³·density.

Houses = hours·30.

P = max(0, 1 − latitude/60).

Days until overrun = log2(humans/zombies).

Calculate the theoretical strength of a password.

Cost = weight·$/kg + time·$/h.

S = 1/((1−p)+p/N).

Returns ASCII code of first letter (A=65).

Needed Ah = load(W)·hours/V.

Returns decimal of binary input.

Z = √(L/C).

Returns input length (chars).

Octal = owner·100+group·10+other.

Hosts = 2^(32−prefix) − 2.

Crosstalk (dB) = 20·log10(Vagg/Vvic).

T(min) = Ah·V·0.8/W·60.

Thrust/weight ≥ 2:1; required thrust(g)=2·weight.

D = ton/(ton+toff).

eDPI = DPI · sensitivity.

IEEE 754 single-precision exponent bias = 127.

Returns input length.

GSD = sensor·altitude/(focal·image_w).

Parity bits k where 2^k ≥ m+k+1.

Hamming distance of two integers (bit diff).

Returns input length (chars). 32=MD5,40=SHA1,64=SHA256.

Hex → decimal of input.

Z0 = √(Zs·ZL).

A=1..Z=26. Input position.

Vout = 1.25·(1+R2/R1).

AND of two bits.

Returns string length.

Returns symbol count of input length.

1=A..26=Z.

Non-inverting: 1 + Rf/Rin.

Even parity: sum of bits %2.

E = L·log2(R).

Microstrip Z ≈ 87/√(εr+1.41)·ln(5.98h/(0.8w+t)).

I = k·ΔT^0.44·A^0.725 (external, k=0.048).

R = ρ·L/(W·T) (ρ_Cu=1.7e−6 Ω·cm).

W = (I/(k·ΔT^0.44))^(1/0.725)/T.

R1 = Z·(K+1)/(K−1), K=10^(dB/20).

t = L/v, v=c/√εr.

RAID5 usable = (n−1)·size.

ns = CAS·2000/MTps.

dBm = 10·log10(mW).

Returns word count.

Returns length.

Returns length.

Returns length.

Returns length.

Returns length.

Returns # keys pressed.

Bits = 8·characters.

Hex chars = 2·characters.

Returns word count.

THD = √(Σ Vn²)/V1·100.

Shifted char = (plain+key)%26.

Returns length.

Calculate how long it takes to download a file.

Calculate aspect ratio of a screen.

Calculate Pixels Per Inch.

Convert between Mbps and MB/s.

Convert GB to TB.

Estimate file transfer time.

Estimate speed from time and size.

Convert hex color to RGB.

Convert RGB to hex color.

Current Unix time in seconds.

Convert number between bases.

Calculate usable hosts in subnet.

Calculate allowed downtime.

Estimate size of a string.

Estimate latency based on distance.

Estimate fuel cost for a trip.

Calculate average speed.

Convert meters to feet.

Convert kilograms to pounds.

Convert Celsius to Fahrenheit.

P = imp/total.

K/D = kills/deaths.

Blocks ≈ π·d.

Distance from origin (blocks).

Stacks = ⌈items/64⌉.

Overworld = nether·8.

Total candy = evolve + power-ups·4.

Σ k² for k=1..n.

Decay hours = HP/dps.

XP per monster.