AMERICAN · IMPERIAL · SI · METRIC
Convert US customary and metric units
Convert common measurements such as length, weight, volume, pressure, and torque between US customary, imperial, and metric units.
Choose a measurement category, enter a value, and select the units to see the converted result.
Select quantity and units
RESULT
Converted result
Введите значение и выберите единицы.
Frequent transformations
Click the example to immediately open the appropriate category and substitute the value.
USA and Imperial are different systems
The American fluid ounce, pint and gallon are not equal to the British Imperial. They are signed separately in the list. Mass ounce oz also different from liquid fl oz. The tightening torque used is lbf: lbf·in and lbf·ft, not pound mass.
Factors verified against NIST reference tables; temperature formulas are applied separately from linear coefficients. NIST SP 811 · conversion factors.
Which units can be converted
- Length, area and volume: inch, foot, mile, acre, cubic inch, US and Imperial gallons, quarts, pints and fluid ounces.
- Weight and temperature: lb, oz, ton, °F, °C and K with separate processing of temperature scales.
- Engineering quantities: psi pressure, lbf·in/lbf·ft torque, power, energy, force, flow and speed.
- Select precision, decimal delimiter with a dot or comma, swap units and copy the result.
American fluid measures are different from British Imperial, and oz mass is different from fl oz. Select the signed system and the desired category before calculating.