🔄 Unit Conversion Workspace

Eleven conversion modes including pressure, energy and power. Switch units without leaving the page.

Choose a calculation

Results update as you type. Use Reset current mode to restore the example. Copy mode link shares the selected formula, not your entered values. Display precision changes presentation only.

Available calculations

Length Mass Temperature Area Volume Speed Storage Time Pressure Energy Power

Formula, standards and limitations

Unit conversion uses internationally defined unit relationships where available, including an exact international foot of 0.3048 metres and a mile of 1609.344 metres. US and UK gallons are different. Decimal gigabytes (GB) are not the same as gibibytes (GiB).

How to use this tool

Choose a calculation mode, enter valid inputs, and read the result. Each mode is linked from the directory. Calculations happen on your device, with no required account or paid API. Verify consequential financial or technical decisions independently.

Explore the full converter and calculator directory or all OpenToolKit tools.

Additional calculation notes

Conversions use fixed SI-based factors. Calories are thermochemical (4.184 joules), horsepower is mechanical, and digital units distinguish decimal and binary multiples. Exchange rates are not included.