Calculators

Quick, accurate calculators for everyday math, finance, and health.

Runs in your browser — nothing uploaded
Percentage CalculatorQuickly calculate any percentage: what is X% of Y, X is what percent of Y, and percentage increase or decrease. Free and private.Loan CalculatorWork out the monthly payment, total interest, and full amortization schedule for any fixed-rate loan. Mortgage, auto, student, personal. Runs in your browser.Age CalculatorFind your exact age in years, months, days, hours, and seconds. See when your next birthday lands and what day of the week you were born.Date Difference CalculatorFind the number of days, weeks, months, and years between any two dates. Add or subtract a number of days to a date. Runs entirely in your browser.BMI CalculatorCalculate your Body Mass Index in metric or imperial units. See where you sit on the WHO scale, with a clear category and a health disclaimer.Tip CalculatorWork out the tip on any bill, split it across the table, and see the per-person total. Quick presets for 10, 15, 18, 20, 25 percent.Discount CalculatorFind the final price and savings on any discount. Reverse-mode works backwards from a sale price to the original. Stacked discounts supported.Calorie Calculator (TDEE & BMR)Estimate your daily calorie needs (TDEE) and BMR from age, sex, height, weight, and activity. See targets for losing, maintaining, or gaining weight.Compound Interest CalculatorCalculate compound interest and investment growth with regular contributions. See future value, total contributions, interest, and a yearly breakdown.Aspect Ratio CalculatorCalculate width or height for any aspect ratio — 16:9, 4:3, 21:9, and more. Lock a ratio and scale dimensions without distortion. All client-side.Sales Tax CalculatorAdd or remove sales tax (VAT/GST) from any price. See the tax amount, net, and gross totals at any rate. Fast, private, and fully client-side.Hours Calculator (Time Card)Add up work hours from start and end times with breaks, across multiple shifts. See total hours and decimal hours, plus optional pay. Runs in your browser.Running Pace CalculatorWork out your running pace, speed, and finish time from distance and time. Pace per km and per mile, km/h and mph. Fast, private, client-side.Statistics CalculatorPaste numbers to get mean, median, mode, range, variance, standard deviation, and quartiles instantly in your browser.