Unit Converter
Convert between units of measurement across cooking, length, weight, temperature, and volume.
How It Works
Most unit conversions work by multiplying a value by a fixed conversion factor. For example, 1 inch equals exactly 2.54 centimeters, so converting 5 inches to centimeters is simply 5 × 2.54 = 12.7 cm. When converting between two non-base units (e.g., miles to feet), the calculation is: value × (miles-to-meters / feet-to-meters).
Temperature is a special case — it uses offset formulas rather than ratios. °C to °F: multiply by 9/5 then add 32. °C to Kelvin: add 273.15. The Kelvin scale starts at absolute zero (−273.15°C), the coldest possible temperature.
Cooking measurements differ by country. The US tablespoon is 14.787 ml; the UK tablespoon is 15 ml; the Australian tablespoon is 20 ml. This converter uses US customary units. Similarly, the US fluid ounce (29.574 ml) differs slightly from the imperial fluid ounce (28.413 ml).