Free online calculators

Money

• Mortgage calculatorMonthly payment with taxes, insurance and PMI
• Compound interest calculatorGrowth of savings with monthly deposits
• Prorated rent calculatorPartial-month rent for move-in or move-out
• Tip calculatorTip, total and split between people

Date and time

• Date difference and age calculatorDays between dates and exact age
• Time zone meeting plannerMeeting times across cities

Health

• BMI calculatorBody mass index and healthy weight
• Calorie calculatorDaily calories to maintain, lose or gain

Everyday

• Percentage calculatorPercent of, percent change and more
• Unit converterLength, weight, temperature, volume and more

About these calculators

Every calculation runs on your device, so nothing you type is sent anywhere. The formulas are checked by automated tests against known values, and each page explains the method it uses.