Free online calculators and unit converters
Quick, accurate answers for money, health, dates, maths, units, text and code. Every formula is checked against published sources.
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- Percentage Calculator Percent of a number, percentage change, increases, decreases and more.
- BMI Calculator Check your body mass index in metric or imperial units.
- Age Calculator Your exact age in years, months and days, plus birthday countdown.
- Loan & EMI Calculator Monthly payment (EMI), total interest and full repayment schedule.
- Length Converter Convert cm, inches, feet, meters, miles and more, exactly.
- Weight Converter Convert kg, pounds, ounces, grams and stone, exactly.
- Temperature Converter Convert Celsius, Fahrenheit, Kelvin and Rankine, with the formula.
- Mortgage Calculator Monthly payment with tax, insurance, PMI and HOA, plus full schedule.
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Why DailyCalc?
DailyCalc is a free collection of calculators for the questions people look up every day. Each tool uses the formula published by the relevant authority, shows its working, and links to its sources so you can check the result yourself.
Pages load fast on any phone, results update as you type, and you can share a link that reproduces your exact calculation. Your inputs are processed on your device and are not sent to a server. Learn how we research and test our calculators.