Free Unit Converters
Convert everyday units without a spreadsheet. Length, mass, temperature and specialty converters each have a focused page so search engines and bookmarks stay clear.
Ounces to pounds
Convert ounces to pounds (1 lb = 16 oz).
OpenOunces to grams
Convert ounces to grams.
OpenPounds to grams
Convert pounds to grams.
OpenWeight converter
Convert between kilograms, grams, pounds, and ounces.
OpenPounds to kilograms
Convert pounds to kilograms.
OpenKilograms to grams
Convert kilograms to grams.
OpenKilograms to pounds
Convert kilograms to pounds.
OpenBinary converter
Convert numbers between binary, octal, decimal, and hexadecimal.
OpenDecimal converter
Convert a decimal integer to binary, octal, and hex.
OpenHex converter
Convert hexadecimal to decimal and binary.
OpenText to binary
Encode text as binary bytes.
OpenRoman numerals
Convert between integers (1–3999) and Roman numerals.
OpenTemperature converter
Convert between Celsius, Fahrenheit, and Kelvin.
OpenCelsius to Kelvin
Convert Celsius to Kelvin.
OpenCelsius to Fahrenheit
Convert Celsius to Fahrenheit.
OpenFahrenheit to Celsius
Convert Fahrenheit to Celsius.
OpenFahrenheit to Kelvin
Convert Fahrenheit to Kelvin.
OpenKelvin to Celsius
Convert Kelvin to Celsius.
OpenWatts to amps
Amps = watts ÷ volts for DC or resistive loads.
OpenHertz to kilohertz
Convert hertz to kilohertz.
OpenMegahertz to gigahertz
Convert megahertz to gigahertz.
OpenMegahertz to hertz
Convert megahertz to hertz.
OpenKilohertz to hertz
Convert kilohertz to hertz.
OpenHertz to gigahertz
Convert hertz to gigahertz.
OpenHertz to megahertz
Convert hertz to megahertz.
OpenLength converter
Convert between meters, km, cm, mm, feet, and inches.
OpenCentimeters to inches
Convert centimeters to inches.
OpenMeters to feet
Convert meters to feet.
OpenInches to millimeters
Convert inches to millimeters.
OpenMillimeters to meters
Convert millimeters to meters.
OpenCentimeters to meters
Convert centimeters to meters.
OpenFeet to centimeters
Convert feet to centimeters.
OpenFeet to meters
Convert feet to meters.
OpenKilometers to meters
Convert kilometers to meters.
OpenMillimeters to inches
Convert millimeters to inches.
OpenCentimeters to feet
Convert centimeters to feet.
OpenCentimeters to millimeters
Convert centimeters to millimeters.
OpenInches to centimeters
Convert inches to centimeters.
OpenMillimeters to centimeters
Convert millimeters to centimeters.
Open
Browse the full catalog on the home page.