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Unit Converters

Convert between units of length, weight, temperature, area, volume, speed, and more. Fast, accurate, free.

1245 tools

Acceleration

8 tools
Feet per Second Squared to G-Force Feet per Second Squared to Meters per Second Squared G-Force to Feet per Second Squared +5 more

Angle

22 tools

Convert between degrees, radians, gradians, and more.

Degrees to Gradians Degrees to Milliradians Degrees to Minutes of Arc +19 more

Angular Speed

6 tools
Degrees per Second to Radians per Second Degrees per Second to RPM Radians per Second to Degrees per Second +3 more

Area

68 tools

Convert between square meters, square feet, acres, hectares, and more.

Acres to Ares Acres to Dunams Acres to Hectares +65 more

Astronomical

24 tools
Astronomical Units to Light Seconds Astronomical Units to Parsecs Earth Masses to Kilograms +21 more

Computing

18 tools
Baud to Bits per Second Bits per Second to Baud Bits to Bytes +15 more

Concentration

12 tools
Grams per Liter to Milligrams per Liter Milligrams per Liter to Grams per Liter Milligrams per Liter to Parts per Million +9 more

Cooking

72 tools
Cups to Deciliters Cups to Fluid Ounces Cups to Gallons +69 more

Data

7 tools
GFLOPS to MFLOPS GFLOPS to TFLOPS MFLOPS to GFLOPS +4 more

Data Rate

14 tools
Bits per Second to Bytes per Second Bytes per Second to Bits per Second Gigabits per Second to Gigabytes per Second +11 more

Data Storage

47 tools

Convert between bytes, KB, MB, GB, TB, and more.

Bits to Bytes Bits to Nibbles Bytes to Bits +44 more

Density

21 tools

Density unit converters.

g/cm³ to kg/m³ g/cm³ to kg/m³ Grams per Liter to Kilograms per Cubic Meter +18 more

Digital Resolution

6 tools
DPCM to DPI DPCM to PPI DPI to DPCM +3 more

Electrical

28 tools
Ampere Hours to Milliampere Hours BTU to Kilowatt Hours Farads to Nanofarads +25 more

Energy

77 tools

Convert between joules, calories, kWh, BTU, and more.

Ampere-Hours to Coulombs BTU to Calories BTU to Joules +74 more

Flow Rate

24 tools

Volume flow rate converters.

CFM to m³/h Converter CFM to m³/h Cubic Feet per Minute to Liters per Second +21 more

Force

26 tools

Convert between Newton, pound-force, dyne, and more.

Dynes to Newtons Dynes to Pounds-Force Kilogram-Force to Newtons +23 more

Frequency

24 tools

Convert between Hz, kHz, MHz, GHz, and more.

GHz to MHz Gigahertz to Hertz Gigahertz to Megahertz +21 more

Fuel Economy

22 tools

MPG, L/100km, and efficiency converters.

km/L to L/100km km/L to MPG UK km/L to MPG US +19 more

Hardness

4 tools
Brinell to Vickers Rockwell C to Vickers Vickers to Brinell +1 more

Illuminance

9 tools

Light measurement converters.

Foot-Candles to Lux Kilolux to Lux Lux to Foot-candles Converter +6 more

Length

144 tools

Convert between meters, feet, inches, kilometers, miles, and more.

Angstroms to Nanometers Angstroms to Nanometers Angstroms to Picometers +141 more

Lumber

6 tools
Board Feet to Cubic Feet Board Feet to Cubic Inches Board Feet to Cubic Meters +3 more

Luminance

8 tools
Candela per Square Meter to Foot-Lamberts Candela per Square Meter to Lamberts Candelas per Square Meter to Nits +5 more

Magnetic

13 tools

Magnetic field and flux converters.

Ampere per Meter to Oersted Gauss to Millitesla Maxwell to Weber +10 more

Moment Of Inertia

4 tools
Gram Square Centimeters to Kilogram Square Meters Kilogram Square Meters to Gram Square Centimeters Kilogram Square Meters to Pound Square Feet +1 more

Paper Size

6 tools
A4 Width mm to Inches Inches to A4 Width mm Inches to Points Typography +3 more

Power

40 tools

Convert between watts, kilowatts, horsepower, BTU/hr, and more.

BTU/hr to Tons (Refrigeration) BTU/hr to Watts BTU/h to Watts +37 more

Precious Metals

10 tools
Avoirdupois Ounces to Troy Ounces Carats Gold to Purity Percentage Grams to Troy Ounces +7 more

Pressure

47 tools

Convert between PSI, bar, atm, Pascal, and more.

Atmospheres to PSI Atmospheres to Bars Atmospheres to Kilopascals +44 more

Radiation

18 tools

Radiation dose unit converters.

Becquerel to Curie Becquerel to Kilobecquerel Coulombs per Kilogram to Roentgen +15 more

Shoe Size

6 tools
EU Size to US Mens EU Size to US Womens UK Size to US Mens +3 more

Sound

11 tools

Sound level and frequency converters.

Bels to Decibels Decibel Addition Calculator Decibel to Neper +8 more

Speed

51 tools

Convert between km/h, mph, m/s, knots, and more.

Centimeters per Second to Kilometers per Hour Centimeters per Second to Miles per Hour Feet per Minute to Feet per Second +48 more

Temperature

20 tools

Convert between Celsius, Fahrenheit, and Kelvin.

Celsius to Delisle Celsius to Fahrenheit Celsius to Kelvin +17 more

Textile

10 tools
Denier to Dtex Denier to Ne Cotton Denier to Tex +7 more

Thermal

6 tools
BTU per Hour per Square Foot per Degree Fahrenheit to Watts per Square Meter per Kelvin Calories per Second per Square Centimeter per Degree Celsius to Watts per Square Meter per Kelvin R-Value Imperial to R-Value Metric +3 more

Time

42 tools

Convert between seconds, minutes, hours, days, weeks, and more.

Centuries to Years Days to Fortnights Days to Hours +39 more

Torque

22 tools

Torque unit converters.

Dyne Centimeters to Newton Meters Foot-Pounds to Inch-Pounds Foot-Pounds to Newton Meters +19 more

Typography

18 tools
Centimeters to Picas Centimeters to Twips Ciceros to Millimeters +15 more

Viscosity

14 tools

Dynamic and kinematic viscosity converters.

Centipoise Converter Centipoise to Pascal Seconds Centistokes to Stokes +11 more

Volume

118 tools

Convert between liters, gallons, cups, milliliters, and more.

Acre-Feet to Cubic Meters Acre-Feet to Gallons Barrels to Gallons +115 more

Weight & Mass

88 tools

Convert between kg, pounds, ounces, grams, tons, and more.

Atomic Mass Units to kg Atomic Mass Units to Kilograms Carats to Grams +85 more

Wire Gauge

4 tools
AWG 10 to Circular Mils Circular Mils to AWG 10 Circular Mils to mm² +1 more