Universal Unit Converter

Convert between metric and imperial units in both directions. Includes length, weight, temperature, area, volume, speed, pressure, energy, and time. Works on iPhone, iPad, and desktop browsers.
Imperial ↔ Metric Quick presets Single HTML file Mobile friendly
Enter a value and choose units.

Quick Imperial ↔ Metric Presets

Tip: use Swap to instantly reverse any conversion.
Common Equivalent
1 inch2.54 cm
1 foot0.3048 m
1 yard0.9144 m
1 mile1.609344 km
1 pound0.45359237 kg
1 gallon (US)3.785411784 L
1 mph1.609344 km/h
32°F0°C
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