Unit Converter
Convert between metric and imperial units — length, weight, temperature, and more.
About Unit Converter
Unit Converter switches a value between units across seven everyday categories — length (millimeters to miles), mass (grams to pounds), temperature (Celsius / Fahrenheit / Kelvin), volume (milliliters to gallons), area (square centimeters to acres), speed (km/h to mph), and digital storage (bytes to terabytes). It is the everyday answer to 'how many X is Y in Z?' whether you are baking, traveling, building, or coding.
Worked example: 100 km converts to 62.137 miles; 350°F converts to 176.667°C; 1 US gallon converts to 3.785 liters; 1 GB converts to 1024 MB. Pick a category, choose the source and target units, and type the value — the result is instant. Conversion factors are the exact international standard values (1 inch = 25.4 mm by definition, 1 foot = 0.3048 m, and so on), so the only rounding you see is in the displayed precision, not the math.
A few notes on edge cases. Temperature conversions use proper offset formulas — Celsius to Fahrenheit is (°C × 9/5) + 32, not a simple multiplier — which is the most common manual-conversion mistake. The gallon used here is the US gallon (3.785 L); the Imperial gallon (4.546 L) is not in the list, so for UK-style measurements you'd want a different tool. Digital storage uses binary units throughout: 1 KB = 1024 bytes, 1 MB = 1024 KB, and so on. That matches how operating systems display file sizes; disk manufacturers and networking specs use the decimal convention (1 KB = 1000 bytes), which is a few percent smaller — the same mismatch that makes a '500 GB' drive show as ~465 GB in Windows.
Conversions run entirely in your browser. Nothing about the values you convert is logged or uploaded.