Length, weight, volume, area, temperature and other quick everyday unit conversions. All tools are free and work directly in your browser.
Popular tools people often start with in this category.
Convert length between inches, feet, yards, miles, millimeters, centimeters, meters and kilometers.
Convert weight and mass between ounces, pounds, stones, grams, kilograms and metric tonnes.
Convert temperature between Fahrenheit, Celsius and Kelvin.
Browse the complete set of tools in this category.
Convert length, weight, area, volume, temperature, speed, pressure, energy and digital storage from one tool.
Convert area between square feet, square meters, acres, hectares, square miles and other common units.
Convert Celsius temperatures to Fahrenheit.
Convert centimeters to inches.
Convert common U.S. cooking volume measurements including teaspoons, tablespoons, cups, fluid ounces, pints, quarts, gallons, milliliters and liters.
Convert US customary cups to milliliters.
Convert digital storage between bytes, kilobytes, megabytes, gigabytes and terabytes using decimal units.
Convert energy between joules, kilojoules, calories, kilocalories, watt-hours and kilowatt-hours.
Convert Fahrenheit temperatures to Celsius.
Convert vehicle fuel economy between miles per gallon (U.S.) and liters per 100 kilometers.
Convert US liquid gallons to liters.
Convert inches to centimeters.
Convert kilograms to pounds.
Convert length between inches, feet, yards, miles, millimeters, centimeters, meters and kilometers.
Convert pounds to kilograms.
Convert pressure between psi, pascals, kilopascals, bar and atmospheres.
Convert speed between miles per hour, kilometers per hour, meters per second and knots.
Convert temperature between Fahrenheit, Celsius and Kelvin.
Convert volume between U.S. gallons, quarts, pints, cups, fluid ounces, liters and milliliters.
Convert weight and mass between ounces, pounds, stones, grams, kilograms and metric tonnes.
Length, weight, volume, area, temperature and other quick everyday unit conversions. Use these tools for quick estimates, comparisons and everyday planning.
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A conversion is meaningful only when the source and destination measure the same kind of quantity. For example, 2.5 meters is 250 centimeters, but a square-meter value cannot be converted to centimeters without first specifying that you mean square centimeters. Temperature is another exception to simple multiplication: Fahrenheit and Celsius conversions also require an offset. For recipes, volume and weight are not interchangeable without ingredient-specific density information.