30+ powerful, free online calculators for all your needs - from health and fitness to finance and everyday math.
Calculate your Body Mass Index and learn about healthy weight ranges.
Open CalculatorDetermine your daily calorie needs based on your goals and activity level.
Open CalculatorAdvanced calculator with trigonometric, logarithmic and algebraic functions.
Open CalculatorConvert between Celsius, Fahrenheit and Kelvin temperature scales.
Open CalculatorCompare the financial implications of renting vs buying a home.
Open CalculatorConvert numbers between binary, decimal, hexadecimal and octal.
Open CalculatorConvert between joules, calories, watt-hours and other energy units.
Open CalculatorAll calculations happen instantly in your browser with no waiting time.
Your data never leaves your computer. We don't store any of your inputs.
Works perfectly on all devices including smartphones and tablets.
All calculators are completely free to use with no hidden charges.
Learn how calculations work with detailed explanations and formulas.
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