All Calculators
Everything in one place, organized by category.
Financial Calculators
View category โAll the money math in one placeโmortgages, loans, interest, and paymentsโwith clear visuals and schedules.
Monthly payment, total interest, payoff.
Payment, interest, and schedule.
Monthly payment, total cost, affordability.
Balance over time; principal vs interest.
Impact of extra/biweekly payments.
Compare offers, APR, break-even.
Max home price from income, debts, rate, taxes.
Compare long-term cost of renting vs buying.
Compare two loansโpayment, total cost, APR with fees.
Front-end & back-end DTI, max PITI vs guidelines.
Simple interest with contributions.
Fixed-term or fixed-payment scenarios.
APY/APR compounding, annually to daily.
Real APR with financed & upfront fees.
Time to debt-free and interest saved.
Order debts by rate or balance; payoff plan.
Future value & interest; APY vs APR.
Convert nominal APR to APY (and back).
Total return and CAGR with contributions.
Split the bill and apply tip pre/post-tax.
Monthly deposit needed to hit a target.
Employee vs employer contributions; growth.
Convert annual pay to hourly (and back) with PTO & holidays.
Stack coupons and tax to get real checkout totals.
Margin %, markup %, profit per unit, breakeven.
Adjust money across years using CPI or average rate.
Fitness & Health Calculators
View category โMacros, calories, BMR, TDEE, BMI, body fat, ideal weight, and target heart rateโquick estimates with clear guidance.
Body fat estimate from measurements.
Body Mass Index with ranges.
Healthy weight ranges by height.
LBM, body fat estimate, BSA.
Daily calorie target from age, sex, activity.
Basal Metabolic Rate at rest.
Total Daily Energy Expenditure.
Macros by plan or custom split.
TDEE, RMR, BMI, time to goal & macros.
Daily grams & ranges; macro % suggestions.
Daily ounces & liters by activity/climate.
Training zones by age and intensity.
Estimate 1RM and % tables.
Solve any two; get splits by distance.
Cooper/Rockport methods with norms.
Math Calculators
View category โPercentages, fractions, statistics, and scientific modeโeveryday math done right.
Percent of, what percent, and change.
Add, subtract, multiply, divide, simplify.
Least common multiple and greatest common divisor.
Population or sample with steps.
z โ percentile; tails areas.
CDF/quantile (one/two-tailed) with chart.
nPr, nCr with/without repetition.
Mean or proportion; bounds & margin.
Live scientific mode with functions.
Four-function, %, โ, memory keys.
Geometry Calculators
View category โTriangles and plane shapes with visuals and formula steps.
Solve sides, angles, area, and radii.
Solve any side; right-triangle checks.
Areas for rectangles, circles, triangles, more.
Radius, diameter, area, circumference with steps.
Volume & surface area for box, cylinder, cone, sphere, pyramid.
Yardage, mยณ and bag counts for slabs, footings, tubes.
Date & Time Calculators
View category โCompute time between, add/subtract durations, and calculate ageโwith clean steps.
Add or subtract days, months, years.
Working days between dates; skip weekends & holidays.
Days until a future date; optional time.
Between times or add/subtract durations.
Convert a time between zones with DST.
Exact age in years, months, days.
School Calculators
View category โGrades and GPA with instant results and clear breakdowns.