Unit Converter

Multiply by 9/5 and add 32: 20°C = 68°F. Pick the Temperature category above and it does the math instantly.

5,280 feet. Type 1 mile in the Length category and open “See all units” to compare every length unit at once.

Multiply kilograms by 2.20462. The Weight category converts kg, g, lb, oz, mg and metric tons instantly.

One knot is about 1.15078 mph. Use the Speed category to convert between m/s, km/h, mph, ft/s and knots.

Binary: 1 KB = 1024 bytes, 1 MB = 1024 KB, and so on, matching how operating systems report file sizes.

One US gallon is 3.78541 liters. The Volume category uses US customary units for teaspoons through gallons.

43,560 square feet. The Area category covers cm² up to square miles.

Yes — open the “See all units” panel under the answer to see your value converted to every unit in the category.

No. All conversions run in your browser; nothing you type is sent to a server or stored.

Small units produce big numbers with repeating decimals. Results are shown to 10 significant digits — round to whatever your class or recipe needs.