Calculators
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Financial Calculators
Mortgage, auto loan, payments, amortization, investments, inflation, taxes, retirement, interest, credit cards, and more.
Browse categoryFitness & Health Calculators
BMI, calories, BMR, body fat, ideal weight, pace, pregnancy, due date, conception, and more.
Browse categoryMath Calculators
Scientific calculator and percentage tools — fast, accurate, in your browser.
Browse categoryOther Calculators
Age and GPA calculators are live now. Date, time, unit conversions, and more — coming soon.
Browse categoryFeatured calculators
BMI Calculator
Weight category, healthy range, gauge, BMI Prime, and Ponderal Index
Try it freeCalorie Calculator
BMR, TDEE, and maintenance or weight-change calorie targets
Try it freeBMR Calculator
Basal metabolic rate and TDEE for every activity level
Try it freeBody Fat Calculator
U.S. Navy and BMI methods, ACE category, fat and lean mass
Try it freeIdeal Weight Calculator
Four IBW formulas plus WHO healthy BMI weight range
Try it freePace Calculator
Pace, time, distance, splits, min/mile ↔ min/km, finish time
Try it freePregnancy Calculator
Due date, weeks pregnant, trimester, milestones, IVF and ultrasound dating
Try it freeDue Date Calculator
Baby’s EDD from LMP with cycle length, conception, ultrasound, or IVF transfer
Try it freePregnancy Conception Calculator
Fertilization estimate, ranges, and intercourse window from due date or LMP
Try it freeMortgage Calculator
Estimate your monthly mortgage payment
Try it freeAuto Loan Calculator
Estimate your monthly car payment and total cost
Try it freeLoan Payoff Calculator
See how fast you can pay off your loan
Try it freeRetirement Savings Calculator
Find out if you're on track to retire comfortably
Try it freeCredit Card Payoff Calculator
Calculate how long to pay off your credit card debt
Try it freeInterest Calculator
Compound growth, contributions, tax, inflation, and schedules
Try it freeCompound Interest Calculator
Convert APR, APY, and rates across compounding frequencies
Try it freeInterest Rate Calculator
Find the nominal rate from loan amount, term, and monthly payment
Try it freePayment Calculator
Monthly payment or payoff time with full amortization
Try it freeAmortization Calculator
Full principal vs interest schedule, annual and monthly tables
Try it freeInvestment Calculator
Growth projections and solve for contribution, rate, or time
Try it freeInflation Calculator
US CPI purchasing power, flat-rate modes, history chart, and YoY table
Try it freeFinance Calculator
Solve for PV, FV, PMT, rate, or periods — full TVM with schedule and chart
Try it freeIncome Tax Calculator
Federal refund or balance due for 2025–2026 with brackets and credits (estimate)
Try it freeSalary Calculator
Hourly, weekly, biweekly, monthly, and annual pay — with holiday and vacation adjustment
Try it freeSales Tax Calculator
Before tax, rate, or total — plus US state reference rates
Try it freeScientific Calculator
Trig (deg/rad), logs, powers, roots, factorial, parentheses, memory
Try it freePercentage Calculator
Percent of, phrases, difference, increase/decrease — any two find the third
Try it freeAge Calculator
Exact age in years, months, days, and total weeks through seconds between two dates
Try it freeGPA Calculator
Course GPA, letter scale, prior cumulative, and future GPA needed for a target
Try it free