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A metric/unit converter changes a measurement from one unit to another — length, mass, volume, temperature, and more. It removes the guesswork (and the risk of a costly mistake) when you need feet in metres or Fahrenheit in Celsius.
This converter does the maths in your browser across common categories. Pick a category, enter a value, and see it in every related unit at once.
Convert cups, grams, ounces and millilitres.
Switch between miles/kilometres and °F/°C.
Convert inches, feet, and metres accurately.
Temperature uses offset formulas, not simple ratios — e.g. °C = (°F − 32) × 5/9 — which the tool applies for you.
They use standard conversion factors. Displayed results are rounded for readability, so very high-precision work may need more decimal places.
No. All conversions are computed locally in your browser.
Colloquially they're used interchangeably; this tool converts mass units (grams, kilograms, pounds) as most people expect.