Free Unit Converter for Length, Weight, Volume & More
Convert between any unit of measurement with our free online unit converter...
Length / Distance
Measure distances and lengths
Mass / Weight
Convert between weight units
Time / Duration
Time period conversions
Electric Current
Electrical current units
Temperature
Temperature scale conversions
Amount of Substance
Mole and substance units
Area
Surface area conversions
Volume / Capacity
Volume and capacity units
Velocity / Speed
Speed measurement units
Acceleration
Rate of velocity change
Force
Push and pull units
Energy / Work / Heat
Energy measurement units
Power
Energy per unit time
Pressure / Stress
Force per unit area
Density
Mass per unit volume
Frequency
Oscillation rate units
Wavelength
Wave distance units
Torque / Moment
Rotational force units
Viscosity
Fluid resistance units
Surface Tension
Liquid surface force
Capacitance
Electrical capacitance units
Inductance
Electrical inductance units
Magnetic Flux
Magnetic field units
Radiation Dose
Radiation exposure units
Radioactivity
Radioactive decay units
Specific Heat Capacity
Heat capacity per unit
Molarity / Concentration
Solution concentration
Catalytic Activity
Enzyme activity units
Angles
Angular measurement units
Astronomical Distance
Cosmic distance units
Nautical Distance
Maritime distance units
Sound Level
Audio measurement units
Information / Data
Digital data units
Frequently Asked Questions
What is a unit converter?
A unit converter is a tool that transforms measurements from one unit system to another. For example, it can convert meters to feet, kilograms to pounds, or Celsius to Fahrenheit. Our free online unit converter handles dozens of measurement categories with instant, accurate results.
How accurate are your conversions?
Our measurement conversion tool uses internationally recognized conversion factors for maximum accuracy. All conversions are calculated using precise mathematical formulas and standard conversion ratios established by scientific organizations.
Do I need to sign up to use the converter?
No registration is required. Our unit converter is completely free to use with no signup, no ads, and no limitations. Simply enter your value, select units, and get instant results.
Which units can I convert?
We support conversions for length/distance, weight/mass, volume, temperature, area, speed, pressure, energy, power, and many other measurement categories. Each category includes both metric (SI) units and imperial/US customary units.