Every calculator you need, in one place.
40 tools across math, conversions, finance, health, dates and everyday life. No sign-up, instant answers.
Math
Numbers, percentages and formulas
Basic CalculatorAdd, subtract, multiply and divide.Scientific CalculatorTrig, logs, powers and constants.Percentage CalculatorPercent of, increase and decrease.Fraction CalculatorAdd and simplify fractions.Average CalculatorMean, median and mode of a list.GPA CalculatorGrade point average by credits.Ratio CalculatorSolve and simplify ratios.Exponent & Root CalculatorPowers, squares and nth roots.
Conversions
Switch between any units
Weight ConverterConvert kg, lb, oz and grams.Length ConverterMetres, feet, inches, miles, cm.Temperature ConverterCelsius, Fahrenheit and Kelvin.Volume ConverterLitres, gallons, cups and ml.Speed Convertermph, km/h, knots and m/s.Area ConverterSq ft, sq m, acres and hectares.Data Storage ConverterMB, GB, TB and bytes.
Finance
Money, loans and payments
Tip CalculatorTip amount and total per person.Split Bill CalculatorDivide a bill between friends.Discount CalculatorSale price and money saved.Sales Tax CalculatorTax added and total due.Loan Payment CalculatorMonthly payment and interest.Mortgage CalculatorHome loan payments over time.Compound Interest CalculatorGrowth of savings over time.Simple Interest CalculatorInterest on a flat principal.Paycheck CalculatorEstimate your take-home pay.ROI CalculatorReturn on any investment.
Health & Fitness
Body, calories and wellness
BMI CalculatorBody mass index and category.Calorie Needs CalculatorDaily calories to hit your goal.BMR CalculatorCalories burned at rest.Body Fat Percentage CalculatorEstimate body fat from measurements.Water Intake CalculatorHow much water to drink daily.Pregnancy Due Date CalculatorEstimated delivery date and weeks.
Date & Time
Dates, ages and durations
Everyday
Practical day-to-day tools
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