Unit Converter Online

What is a Unit Converter?

A unit is a measurement of a quantity that is defined or adopted by tradition or law. Other quantities can be expressed as a multiple of the unit. In human history, various unit systems were developed and used in different regions and cultures. Currently, the global standard of measurement is the International System of Units (SI), which is a modern form of the metric system. Although SI is intended for global use, it has not been fully adopted, and some countries, such as the United States, still use their own measurement systems.

This website provides a free, fast, and accurate online unit conversion tool for a wide variety of measurement categories including length, weight, temperature, area, volume, time, speed, pressure, energy, electricity, magnetism, radiology, and many more — over 79 converters in total.