Free Unit Converters
28 free tools — Length, weight, temperature, and data-size converters
Length Converter
Convert between length units: meters, feet, inches, miles, kilometers, and more. Fast and accurate.
Weight Converter
Convert between weight and mass units: kg, lbs, oz, grams, stones. Essential for cooking and fitness.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin. Perfect for cooking, weather, and science.
Data Size Converter
Convert between KB, MB, GB, TB, and more. Understand file sizes and storage.
Miles to KM
Convert miles to kilometers and kilometers to miles. Quick distance conversion for travel.
KG to LBS
Convert kilograms to pounds and pounds to kilograms. Quick weight conversion.
Celsius to Fahrenheit
Convert Celsius to Fahrenheit and Fahrenheit to Celsius. Quick temperature conversion.
Speed Converter
Convert speed between mph, km/h, m/s, knots, and more. Useful for travel and physics.
Volume Converter
Convert volume between liters, gallons, ml, cups, and more. Essential for cooking and liquids.
Area Converter
Convert area between square meters, square feet, acres, hectares, and more.
Pressure Converter
Convert pressure between psi, bar, pascal, atm, and more. For tires, diving, and engineering.
Energy Converter
Convert energy between joules, calories, kWh, BTU, and more. For nutrition and physics.
Power Converter
Convert power between watts, horsepower, BTU/hr, and more. For electrical and mechanical applications.
Fuel Consumption
Convert fuel economy between mpg, km/L, L/100km. Compare efficiency across regions.
Time Converter
Convert between seconds, minutes, hours, days, and more. For scheduling and calculations.
Angle Converter
Convert between degrees, radians, and gradians. For math, engineering, and navigation.
Frequency Converter
Convert between Hz, kHz, MHz, GHz. For radio, audio, and electronics.
Cooking Converter
Convert cooking measurements: cups, tablespoons, teaspoons, grams, oz. Scale recipes easily.
Shoe Size Converter
Convert shoe sizes between US, UK, EU, and other international standards.
Clothing Size Converter
Convert clothing sizes between US, UK, EU, and international standards. For shirts, pants, and more.
Inches to CM
Convert inches to centimeters and centimeters to inches. For height, screens, and measurements.
Feet to Meters
Convert feet to meters and meters to feet. For height, room dimensions, and construction.
Ounces to Grams
Convert ounces to grams and grams to ounces. For cooking, postal, and precious metals.
Cups to ML
Convert cups to milliliters and milliliters to cups. Essential for baking and recipes.
Gallons to Liters
Convert gallons to liters and liters to gallons. For fuel, water, and liquids.
Acres to Hectares
Convert acres to hectares and hectares to acres. For land area and real estate.
Tablespoons to ML
Convert tablespoons to milliliters and milliliters to tablespoons. For precise recipe measurements.
Pixels to REM
Convert pixels to REM and REM to pixels. For responsive web design and accessibility.
About Unit Converters
Unit converters cover the conversions you reach for most: miles ↔ kilometers, kilograms ↔ pounds, Celsius ↔ Fahrenheit, plus general-purpose converters for length, weight, temperature, and data size (bytes through petabytes). Each converter is bidirectional — type in either field and the other updates instantly.
Travellers use them to translate speed limits and distances. Cooks convert between metric and imperial recipes. Engineers and scientists step through unit prefixes when reading specs. The data-size converter is handy for sizing exports, downloads, and storage budgets.
The conversion formula is shown alongside the result so you can verify the math or use it offline. All 7 converters run entirely in your browser; nothing is sent to any server.