Convert between units of measurement
Converting between different units of measurement is a frequent need in science, engineering, cooking, travel, and everyday life. Our free Unit Converter supports six categories: length, weight, temperature, area, volume, and speed. Each category includes the most commonly used units, from metric to imperial and beyond. Simply select a category, enter a value, choose the source and target units, and get instant results.
The converter uses precise conversion factors for all calculations. Temperature conversions use the exact formulas between Celsius, Fahrenheit, and Kelvin. Length conversions cover meters, kilometers, centimeters, millimeters, miles, yards, feet, and inches. Weight supports kilograms, grams, milligrams, pounds, ounces, and metric tons. All conversions happen in real-time in your browser as you type, with no server communication required.