Unit encyclopedia

The SI base unit of length, defined using the speed of light.

A metric unit equal to 1,000 meters.

A metric unit equal to one hundredth of a meter.

A metric unit equal to one thousandth of a meter.

An international customary unit defined as exactly 25.4 millimeters.

A customary unit equal to exactly 0.3048 meter or 12 inches.

A customary unit equal to exactly 0.9144 meter or 3 feet.

A customary unit equal to exactly 1,609.344 meters.

The SI base unit of mass, defined using the Planck constant.

A metric unit equal to one thousandth of a kilogram.

An avoirdupois unit defined as exactly 0.45359237 kilogram.

An avoirdupois unit equal to one sixteenth of a pound.

A British unit equal to 14 avoirdupois pounds.

A scale where water freezes at 0 °C and boils near 100 °C.

A scale where water freezes at 32 °F and boils near 212 °F.

The SI base unit of thermodynamic temperature.

A metric volume equal to one cubic decimeter.

A metric unit equal to one thousandth of a liter.

A US liquid unit equal to exactly 3.785411784 liters.

A US cooking measure equal to 236.5882365 milliliters.

A US liquid unit equal to one eighth of a cup.

The SI-derived area of a square one meter on each side.

An area equal to exactly 0.09290304 square meter.

A land area equal to 43,560 square feet.

A metric land area equal to 10,000 square meters.

One kilometer traveled in one hour.

One statute mile traveled in one hour.

The SI-derived unit of speed.

A nautical speed equal to exactly 1.852 km/h.

The SI base unit of time.

A duration equal to 60 seconds.

A duration equal to 60 minutes.

A duration equal to 24 hours.

A digital information unit commonly composed of eight bits.

A decimal data unit equal to 1,000 bytes.

A decimal data unit equal to 1,000,000 bytes.

A decimal data unit equal to 1,000,000,000 bytes.

A decimal data unit equal to 1,000 gigabytes.

The SI-derived unit of energy.

A thermochemical unit equal to exactly 4.184 joules.

Energy delivered by one kilowatt for one hour.

A traditional heat-energy unit.

The SI-derived unit of power equal to one joule per second.

A power unit equal to 1,000 watts.

A unit historically associated with engine output.