Unit Converters

A powerful and comprehensive weight and mass converter. Instantly convert between metric, imperial, and scientific units including kilograms, pounds, ounces, stones, and tons.

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Free and easy-to-use length converter. Instantly convert between meters, kilometers, miles, feet, inches, and other metric and imperial units.

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A comprehensive volume converter for metric and imperial units. Instantly convert between liters, gallons (US & UK), cubic meters, cups, ounces, and many more.

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An accurate and easy-to-use temperature converter. Instantly convert between Celsius, Fahrenheit, Kelvin, and Rankine for scientific or everyday needs.

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A powerful area converter for land measurement, real estate, and scientific use. Instantly convert between square meters, hectares, acres, square feet, and more.

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A comprehensive pressure converter for engineering, scientific, and meteorological use. Instantly convert between pascals, bar, psi, atmospheres, and more.

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A powerful energy converter for physics, engineering, and nutritional use. Instantly convert between joules, kilowatt-hours, calories, BTUs, and electron-volts.

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A precise angular velocity converter for engineering and physics. Instantly convert between radians per second, revolutions per minute (RPM), degrees per second, and more.

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A comprehensive acceleration converter for physics and engineering. Instantly convert between meter/square second, g-force, foot/square second, and other units.

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A powerful density converter for science and engineering. Instantly convert between kilogram/cubic meter, gram/cubic centimeter, pound/cubic foot, and more.

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A scientific and engineering tool for converting specific volume units. Instantly convert between cubic meter/kilogram, cubic foot/pound, and other units.

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An engineering and physics tool to convert moment of inertia units. Instantly convert between kilogram square meter, pound square foot, slug square foot, and more.

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An engineering and physics tool to convert moment of force (torque) units. Instantly convert between newton meter, pound-force foot, and other units.

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An essential engineering and mechanics tool to convert torque units. Instantly convert between newton meters, pound-force feet, pound-force inches, and more.

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A scientific and engineering tool to convert mass-based fuel efficiency and specific energy units. Convert between joules/kilogram, Btu/pound, calories/gram, and more.

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An engineering and scientific tool for converting volumetric energy density units. Convert joule/cubic meter, Btu/cubic foot, joule/liter, and more.

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A scientific tool to convert temperature differences or changes. Convert intervals between Kelvin, Celsius, Fahrenheit, Rankine, and Reaumur.

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An engineering and materials science tool to convert coefficients of thermal expansion. Convert between per Kelvin, per degree Celsius, and per degree Fahrenheit.

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A thermodynamics and engineering tool for converting thermal resistance units. Crucial for calculating heat transfer and insulation performance (R-value).

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A thermodynamics and material science tool for converting thermal conductivity (k-value) units. Essential for heat transfer analysis and material selection.

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A thermodynamics and materials science tool for converting specific heat capacity units. Convert J/(kg·K), Btu/(lb·°F), cal/(g·°C), and more.

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A tool for converting heat density units, crucial for solar energy, meteorology, and surface energy analysis. Convert between J/m², Langley, and Btu/ft².

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A thermodynamics and engineering tool for converting heat flux density units. Convert between W/m², Btu/(h·ft²), and units for solar irradiance.

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An engineering and building science tool for converting heat transfer coefficient units (U-value). Convert between W/(m²·K) and Btu/(h·ft²·°F).

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A fluid dynamics and engineering tool for converting volumetric flow rates. Instantly convert m³/s, liters/second, gallons per minute (GPM), and ft³/s.

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A process engineering and chemistry tool for converting mass flow rates. Instantly convert between kg/s, pounds per hour, grams per second, and metric tons per hour.

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A chemistry and chemical engineering tool for converting molar flow rates. Convert between mol/s, kmol/h, and other units for stoichiometric calculations.

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A chemistry and chemical engineering tool for converting molar flow rates. Convert between mol/s, kmol/h, and other units for stoichiometric calculations.

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A tool for converting mass flux density units. Convert between g/(s·m²), kg/(h·m²), and lb/(h·ft²) for deposition, evaporation, and membrane processes.

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A chemistry tool for converting units of molar concentration (molarity). Convert between mol/m³, mol/L (M), mmol/L, and other common molarity units.

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A chemistry and environmental science tool for converting mass concentration units. Convert between kg/L, g/L, ppm, and pounds per gallon.

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A fluid mechanics and engineering tool for converting dynamic (or absolute) viscosity units. Convert between Pascal-seconds, poise, centipoise (cP), and more.

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A fluid mechanics and engineering tool for converting kinematic viscosity units. Convert between square meters per second, Stokes, and centistokes (cSt).

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A chemistry and material science tool for converting surface tension units. Convert between newtons per meter, millinewtons per meter, and dynes per centimeter.

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A material science and engineering tool for converting units of permeability, describing a material's ability to transmit fluids or gases.

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A photometry and display technology tool for converting luminance units. Convert between candela/m² (nits), lamberts, foot-lamberts (fL), and stilb.

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A photometry tool for converting units of luminous intensity. Convert between the modern candela and various historical candlepower standards.

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A lighting design and photography tool for converting illuminance units. Convert between lux, foot-candles (fc), phot, and lumen-based units.

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A graphic design and printing tool for converting digital image resolution units. Convert between dots per inch (DPI), pixels per inch (PPI), and dots per millimeter.

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A physics and telecommunications tool to convert between frequency (Hz, MHz, GHz) and the corresponding electromagnetic wavelength (m, cm, nm).

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An engineering and physics tool for converting power units. Instantly convert between watts, kilowatts, horsepower (metric and mechanical), and BTU/hour.

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A physics and mechanical engineering tool for converting force units. Convert between newtons, pound-force (lbf), kilogram-force (kgf), and dynes.

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A comprehensive time converter for everyday and scientific use. Convert between seconds, minutes, hours, days, weeks, years, and even nanoseconds.

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A versatile speed and velocity converter. Instantly convert between meters per second, kilometers per hour, miles per hour, knots, and even the speed of light.

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A geometry and trigonometry tool for converting angle units. Convert between degrees, radians, gradians, minutes, seconds, and revolutions.

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An automotive tool for converting fuel consumption and fuel economy units. Convert between MPG (US & UK), L/100km, and km/L.

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An electronics and physics tool for converting electric charge units. Convert between coulombs (C), ampere-hours (Ah), faradays, and elementary charge (e).

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An electrostatics tool for converting linear charge density units. Convert between coulombs per meter (C/m), coulombs per centimeter, and other scales.

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An electrostatics tool for converting surface charge density units. Convert between coulombs per square meter (C/m²), coulombs per square centimeter, and more.

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An electrostatics tool for converting volume charge density units. Convert between coulombs per cubic meter (C/m³), coulombs per cubic centimeter, and more.

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An electronics and physics tool for converting electric current units. Convert between amperes (A), milliamperes (mA), biot (Bi), abamperes, and statamperes.

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A physics and engineering tool for converting electric field strength units. Convert between volts per meter (V/m), newtons per coulomb (N/C), and other scales.

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An electronics and physics tool for converting electric potential (voltage) units. Convert between volts (V), abvolts, statvolts, and other scales.

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An electronics and circuit analysis tool for converting electric resistance units. Convert between ohms (Ω), megaohms, abohms, and statohms.

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A materials science tool for converting electric resistivity units. Convert between ohm meter (Ω·m), ohm centimeter, and microhm centimeter.

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An electronics tool for converting electric conductance units. Convert between siemens (S) and its historical equivalent, the mho.

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An electronics and circuit design tool for converting electrostatic capacitance units. Convert between farads (F), microfarads (µF), nanofarads (nF), and picofarads (pF).

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An electronics and physics tool for converting inductance units. Convert between henrys (H), millihenrys (mH), and microhenrys (µH).

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A magnetism and physics tool for converting magnetomotive force (MMF) units. Convert between ampere-turns (At) and gilberts (Gi).

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A magnetism and physics tool for converting magnetic field strength (H-field) units. Convert between amperes per meter (A/m) and oersteds (Oe).

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A physics and engineering tool for converting magnetic flux units. Convert between webers (Wb), maxwells (Mx), and other related units.

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A magnetism and physics tool for converting magnetic flux density (B-field) units. Convert between teslas (T) and gauss (G).

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A health physics and radiology tool for converting absorbed dose rate units. Convert between grays per second (Gy/s), rads per second (rad/s), and more.

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A nuclear physics and safety tool for converting radioactivity units. Convert between becquerels (Bq), curies (Ci), and disintegrations per second.

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A dosimetry and health physics tool for converting radiation exposure units. Convert between coulombs per kilogram (C/kg) and roentgens (R).

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A health physics and dosimetry tool for converting absorbed dose units. Convert between grays (Gy), rads, centigrays (cGy), and more.

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A tool to understand and convert between metric (SI) prefixes, from yotta- (10²⁴) to yocto- (10⁻²⁴). See the scale of scientific measurements.

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A networking and IT tool for converting data transfer rates. Convert between bits per second, kilobytes per second, megabits per second (Mbps), and gigabytes per second.

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An acoustics and audio engineering tool for converting sound level units. Convert between the decibel (dB), bel (B), and neper (Np).

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A design and publishing tool for converting typographic units. Convert between points (pt), picas, inches, twips, and pixels.

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A forestry and construction tool for converting common lumber and timber volume units. Convert between board feet, cords, and cubic meters.

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