Free Online Unit Converters
Convert units, colors and more
Universal File ConverterColor ConverterNumber System ConverterTemperature ConverterLength ConverterWeight ConverterVolume ConverterSpeed ConverterArea ConverterEnergy ConverterPressure ConverterData Size ConverterAngle ConverterPower ConverterFuel ConsumptionCoordinate Converter
Tools in Converters
Compare all 16 tools by their catalog descriptions and open the one you need.
- Universal File ConverterAdd any images, audio, video or PDF — the format is detected automatically
- Color ConverterConvert colors between HEX, RGB, CMYK, HSL, HSV formats
- Number System ConverterConvert numbers between binary, octal, decimal and hexadecimal
- Temperature ConverterConvert between Celsius, Fahrenheit and Kelvin
- Length ConverterConvert meters, feet, inches, miles, kilometers and more
- Weight ConverterConvert kilograms, pounds, ounces, tons and more
- Volume ConverterConvert liters, gallons, cubic meters and more
- Speed ConverterConvert km/h, mph, m/s, knots
- Area ConverterSquare meters, square feet, hectares, acres
- Energy ConverterJoules, calories, kilowatt-hours, BTU
- Pressure ConverterPascals, atmospheres, bars, PSI, mmHg
- Data Size ConverterBits, bytes, kilobytes, megabytes, gigabytes, terabytes
- Angle ConverterDegrees, radians, gradians, minutes, seconds
- Power ConverterWatts, horsepower, BTU/h, kW
- Fuel ConsumptionL/100km, MPG, km/L — fuel consumption conversion
- Coordinate ConverterLatitude/longitude in various formats: DD, DMS, DDM
About Converters
A collection of free online converters for instant unit conversion. Temperature, length, weight, volume, speed, energy, pressure and more — all in one place. Converters work right in your browser: no apps to download. Results appear instantly with high precision.
What these tools can do
- Temperature converters: Celsius, Fahrenheit, Kelvin
- Length converters: meters, feet, inches, miles
- Weight converters: kg, pounds, ounces, tons
- Volume converters: liters, gallons, cubic meters
- Speed converters: km/h, m/s, mph
- Data converters: bytes, KB, MB, GB, TB
- Color converter: HEX, RGB, CMYK, HSL
- GPS coordinate converter: DD, DMS, DDM
When to use them
Unit converters are indispensable for students solving problems, engineers designing systems, developers building international services, and travelers. Especially useful when working with foreign documents, recipes, and technical documentation.