Unit Converter

Fast, accurate conversions across 75 categories — length, weight, temperature, volume, and more.

Category

From

To

1000

1 Kilometer = 1000 Meter

Common

13

Length Mass / Weight Temperature Volume Area Speed Time Digital storage Pressure Energy Power Angle Frequency

Mechanics

9

Force Fuel consumption Acceleration Angular velocity Angular acceleration Density Specific volume Moment of inertia Torque

Fluids

10

Flow Mass flow Molar flow Molar concentration Solution concentration Dynamic viscosity Kinematic viscosity Surface tension Mass flux density Permeability

Heat

10

Temperature interval Thermal conductivity Thermal expansion Thermal resistance Specific heat capacity Heat density Heat flux density Heat transfer coefficient Fuel efficiency — mass Fuel efficiency — volume

Light

4

Luminance Luminous intensity Illuminance Digital image resolution

Electricity

15

Electric charge Electric current Electric potential Electric resistance Electric conductance Capacitance Inductance Electric field strength Electric resistivity Electric conductivity Linear charge density Surface charge density Volume charge density Linear current density Surface current density

Magnetism

4

Magnetomotive force Magnetic field strength Magnetic flux Magnetic flux density

Radiology

4

Radioactivity Radiation absorbed dose Radiation dose equivalent Radiation exposure

Other

6

Data transfer rate Typography CSS units Volume — dry Volume — lumber SI prefixes

About Unit Converter

A unit converter changes a measurement from one unit to another. Pick a category — length, weight, temperature, data, area, speed, and 75+ more — enter a value, and get accurate conversions instantly. It runs in your browser with no sign-up.

Frequently asked questions

How many unit categories are supported?: Over 75, covering everyday and technical needs — length, mass, temperature, volume, area, speed, data storage, energy, pressure, and many more.
Are the conversions accurate?: Yes. Conversions use standard factors and precise formulas (including non-linear ones like temperature).
Does it work offline or on mobile?: It runs in any modern browser on phone, tablet, or desktop, with no install.