All Converter Categories
49 categories covering thousands of unit conversions.
Core Units
Length & Distance
Convert between kilometers, miles, feet, meters, inches, and more
Weight & Mass
Convert between kilograms, pounds, ounces, grams, and more
Temperature
Convert between Celsius, Fahrenheit, Kelvin, and Rankine
Speed
Convert between mph, km/h, m/s, knots, and Mach
Volume
Convert between liters, gallons, milliliters, cups, and more
Area
Convert between square feet, square meters, acres, hectares, and more
Time
Convert between seconds, minutes, hours, days, weeks, and more
Data & Technology
Data Storage
Convert between bytes, kilobytes, megabytes, gigabytes, and more
Data Transfer Rate
Convert between bps, Kbps, Mbps, and Gbps
Color Codes
Convert between HEX, RGB, HSL, and CMYK color formats
Number Bases
Convert between binary, octal, decimal, and hexadecimal
Encoding
Encode and decode URL, HTML, Base64, and more
Financial
Science
Pressure
Convert between PSI, bar, atm, Pascal, and mmHg
Energy
Convert between joules, calories, kilowatt-hours, BTU, and more
Power
Convert between watts, kilowatts, horsepower, and BTU/h
Frequency
Convert between hertz, kilohertz, megahertz, and gigahertz
Fuel Economy
Convert between mpg, L/100km, and km/L
Angle
Convert between degrees, radians, gradians, and arc seconds
Force
Convert between newtons, pound-force, kilogram-force, kips, and more
Torque
Convert between newton-meters, foot-pounds, inch-pounds, and more
Acceleration
Convert between m/s², ft/s², standard gravity, and more
Area Moment of Inertia
Convert second moment of area between m⁴, cm⁴, mm⁴, in⁴, and ft⁴
Mass Moment of Inertia
Convert moment of inertia between kg·m², lb·ft², slug·ft², and more
Angular Velocity
Convert between rad/s, RPM, degrees per second, and revolutions per second
Angular Acceleration
Convert between rad/s², deg/s², RPM/s, and rev/s²
Density
Convert between kg/m³, g/cm³, lb/ft³, lb/in³, and more
Dynamic Viscosity
Convert between Pa·s, centipoise, poise, and imperial viscosity units
Kinematic Viscosity
Convert between m²/s, centistokes, stokes, ft²/s, and more
Volumetric Flow Rate
Convert between m³/s, GPM, CFM, L/min, and more
Mass Flow Rate
Convert between kg/s, lb/s, lb/hr, g/s, and metric ton per hour
Surface Tension
Convert between N/m, mN/m, dyn/cm, lbf/ft, and lbf/in
Specific Heat Capacity
Convert between J/(kg·K), kJ/(kg·K), BTU/(lb·°F), and cal/(g·°C)
Thermal Conductivity
Convert between W/(m·K), BTU/(hr·ft·°F), and cal/(s·cm·°C)
Heat Flux
Convert between W/m², kW/m², BTU/(hr·ft²), and cal/(s·cm²)
Heat Transfer Coefficient
Convert between W/(m²·K), BTU/(hr·ft²·°F), and kcal/(hr·m²·°C)
Entropy
Convert between J/K, kJ/K, cal/K, and BTU/°R
Specific Entropy
Convert between J/(kg·K), kJ/(kg·K), BTU/(lb·°R), and cal/(g·°C)
Specific Energy
Convert between J/kg, kJ/kg, BTU/lb, cal/g, and ft·lbf/lb
Strain
Convert between unitless strain, percent, microstrain, mm/mm, and in/in
Spring Rate
Convert between N/m, N/mm, kN/m, lbf/in, and kgf/mm
Linear Density
Convert between kg/m, lb/ft, tex, denier, and more
Surface Roughness
Convert between μm, μin, nm, and mm roughness values
Cutting Speed
Convert between m/min, m/s, ft/min (SFM), and ft/s