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Unit Converter

Convert length, weight, temperature, volume, area, speed, time, energy, pressure, data & more — 200+ units across 12 categories, instant results

✓ 100% Free✓ No Signup✓ 12 Categories✓ 200+ Units✓ Metric & Imperial✓ Instant Results

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Result

Select units and enter a value to see the conversion result

Common Conversions

1 km= 0.621 mi
1 mile= 1.609 km
1 foot= 30.48 cm
1 inch= 2.54 cm
1 meter= 3.281 ft
1 yard= 0.914 m

How to Use the Unit Converter

Select a category from the tabs above, choose your source and target units from the dropdowns, then type your value. The result updates instantly — no button press required. Use the ⇅ Swap button to reverse the conversion, or switch to "All Units" to see every unit in the category at once.

What Is a Unit Converter?

A unit converter is a tool that expresses the same physical quantity in different measurement systems. For example, 1 kilometre = 0.621 miles, or 100 °C = 212 °F. Our free online unit converter handles 12 categories including length, weight, temperature, volume, area, speed, time, energy, pressure, data storage, fuel economy, and angle — with over 200 units total.

Frequently Asked Questions