10 calculators
Converters calculators
Unit and measurement converters: length, weight, temperature, volume, area, speed, time units, energy, pressure, and data storage.
Converters
Length Converter
Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles.
Converters
Weight Converter
Convert weight and mass units: milligram, gram, kilogram, metric tonne, ounce, pound, stone, US ton, and imperial ton.
Converters
Temperature Converter
Convert between Fahrenheit, Celsius, Kelvin, and Rankine using exact formulas. Flags impossible values below absolute zero.
Converters
Volume Converter
Convert volume units across metric (mL, L, cubic centimeter, cubic meter), US liquid (tsp, tbsp, fl oz, cup, pint, quart, gallon), and cubic (in³, ft³, yd³).
Converters
Area Converter
Convert area units: square millimeter, square centimeter, square meter, square kilometer, square inch, square foot, square yard, acre, hectare, and square mile.
Converters
Speed Converter
Convert between meters per second, kilometers per hour, miles per hour, feet per second, and knots.
Converters
Time Unit Converter
Convert between milliseconds, seconds, minutes, hours, days, weeks, months, and years. Months and years use documented average lengths.
Converters
Energy Converter
Convert between joules, kilojoules, calories, kilocalories (food Calories), watt-hours, kilowatt-hours, and BTU. Disambiguates cal vs kcal clearly.
Converters
Pressure Converter
Convert between pascal, kilopascal, bar, atmosphere, psi, mmHg, and torr. Use-case neutral, unit conversion only.
Converters
Data Storage Converter
Convert between decimal (KB, MB, GB, TB, PB) and binary (KiB, MiB, GiB, TiB, PiB) data storage units. Clear labels for 1,000-byte vs 1,024-byte conventions.