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Open toolUnit Converter
Convert compatible length, mass, volume or temperature units.
Maximum 200,000 characters. Input is not stored.
Ready. Use Ctrl/⌘ + Enter to run.
Completed and failed run counts are stored only on this device.
How to use this tool
Select source and destination units in the same dimension, enter a finite number, and run. Temperature conversions use their offset formulas.
Supported input and limits
Supported units only. Gallons are US liquid gallons; lb/oz are avoirdupois. Temperatures below absolute zero are rejected. Output rounds to 14 significant digits.
Frequently asked questions
Can I convert kilograms to liters?
No. That requires a substance-specific density. This tool prevents conversions between incompatible dimensions.
Is my input uploaded?
No. Processing happens in a disposable worker on your device. Only local success/failure counts are saved; input is never stored.
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