Units

Just enter a value and pick a unit to instantly convert between meters, centimeters, inches, feet, shaku, nautical miles, light-years and more. A single table shows the value in every other unit at once.

Convert between m², acres, hectares, square feet, and Japanese units like tsubo and jo. Enter a value, pick a unit, and see every conversion at once.

Enter a value and pick a unit to convert at once between mL, L, m³, cubic inches, cubic feet, US/UK gallons, pints and quarts, plus the Japanese go, sho, to and koku.

Convert between 8 flow rate units such as L/min, m³/h, US gal/min, and ft³/s. Enter a value, pick a unit, and see every conversion at once.

Convert weight and mass between grams, kilograms, tonnes, pounds, ounces, and more. Enter a value, pick its unit, and see a full conversion table instantly.

Convert between force units such as newtons (N), kilonewtons (kN), kilogram-force (kgf), dynes, and pound-force (lbf). Just enter a value and pick a unit to see all conversions at once.

Just pick a value and unit to convert across the major pressure units at once: Pa, kPa, MPa, hPa, bar, atm, mmHg, psi, kgf/cm² and meters of water. Handy for weather, plumbing, tire pressure and more.

Convert W, kW, MW, horsepower (PS/hp), kcal/h, BTU/h, and erg/s all at once. Just enter a value and pick a unit to see a full conversion table.

Convert energy units like joules, calories, kWh, and electronvolts all at once just by entering a value. Great for estimating electricity costs and studying physics and nutrition.

Free speed unit converter for km/h, m/s, mph, knots, ft/s, and Mach. Enter a value, pick its unit, and see every conversion in one table.

Convert data transfer speeds across bps, kbps, Mbps, Gbps, Tbps, byte units (B/s, KB/s, MB/s, GB/s) and binary units (Kibit/s, MiB/s, and more) all at once. Just enter a value and pick a unit to see the conversion for every unit in one table.

Convert m/s², Gal, ft/s², G (standard gravity), and km/h/s all at once. Just enter a value and pick a unit to see a full conversion table.

Convert between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur all at once. Just enter a value and pick its unit to see the full conversion table.

Convert between degrees, radians, gradians, arcminutes, arcseconds, and revolutions. Just enter a value and pick a unit to see the conversion to every unit in one table.

Free tool to convert angular velocity units such as rad/s, degrees per second, rpm, rps and degrees per minute. Just enter a value and pick a unit to instantly see a full conversion table.

Just enter a value and pick a unit to instantly convert between nanoseconds, milliseconds, seconds, minutes, hours, days, weeks, months, years, and centuries. See every unit at once in a single table.

Just enter a value and pick a unit to instantly convert between major density units: kg/m³, g/cm³, g/mL, kg/L, t/m³, lb/ft³, lb/in³ and g/L. See every unit's value at once in a single table.

Convert fuel economy between km/L, L/100km, and mpg (US/UK). Just enter a value and pick a unit to see the conversion to every unit in one table.

Convert between percent, per mille, ppm, ppb, decimal ratios and the Japanese wari, bu and rin units. Just enter a value and pick a unit to see a full conversion table.

Convert a value with any SI prefix to every other prefix at once, from pico to peta. Instantly see how kilo, milli, mega and giga relate by powers of ten.

Convert dynamic viscosity (absolute viscosity) between Pa·s, mPa·s, poise (P), centipoise (cP) and kgf·s/m². Enter a value and pick a unit to see a full conversion table.

Convert torque units like N·m, kgf·m, and lbf·ft. Enter a value and pick a unit to see the converted value in every unit at once.

Convert radioactivity units like becquerel (Bq), curie (Ci) and dps. Just enter a value and pick a unit to see a full conversion table.

Enter an exposure value and pick a unit to instantly convert between coulombs per kilogram (C/kg), microcoulombs per kilogram (µC/kg), roentgens (R), and milliroentgens (mR). A free tool that converts accurately using the defined value 1 R = 2.58×10⁻⁴ C/kg.

Convert between gray (Gy), milligray, microgray, rad, kilorad, and erg/g. Just enter a value and pick a unit to see a full conversion table for every unit.

Just pick a value and unit to instantly convert between lux, kilolux, foot-candles, phot, nox and other key illuminance units. A table shows every unit's value at once.

Convert between m²/s, cm²/s, stokes (St), centistokes (cSt), and mm²/s. Just enter a value and pick a unit to see all conversions at once.

Convert thermal conductivity units such as W/(m·K), kcal/(m·h·°C), cal/(cm·s·°C), and BTU/(ft·h·°F). Just enter a value and unit to see every unit at once.

Convert µΩ, mΩ, Ω, kΩ, MΩ, and GΩ all at once. Just enter a value and a unit to see the result in every electrical resistance unit.

Convert magnetic flux density between teslas, gauss, gamma and more. Just enter a value and unit to see every unit at once.

Convert inches, feet, yards, and miles to and from millimeters, centimeters, meters, and kilometers instantly. Just enter a value and pick a unit to see the full conversion table.

Instantly convert US and Imperial (UK) gallons, pints, quarts and fluid ounces to liters and milliliters, with US and UK units shown side by side.

Convert between pounds, ounces, stones, grains and grams or kilograms. Just enter a value and pick a unit to see the weight in every unit at once.

Convert decimal degrees (e.g. 35.6895°) into degrees, minutes, and seconds (35°41′22.20″) instantly. Pick latitude or longitude to add N/S or E/W direction markers, and view the full degrees-minutes-seconds breakdown. Ideal for map and GPS coordinate conversion.

Convert latitude and longitude from degrees, minutes and seconds (DMS) to decimal degrees (6 decimal places) just by entering the values and a direction (N/S/E/W). See the full breakdown, with minutes divided by 60 and seconds by 3600.

Convert between frequency (Hz, kHz, MHz, GHz) and wavelength (m, cm, mm). Pick a propagation speed such as light or sound and instantly compute λ = v / f.

Convert decibels (dB) to power and voltage ratios and back. Includes a quick reference table for 0, 3, 6, 10, 20, 40 dB and more.

Convert ancient Roman length units such as pes, passus and stadium to meters and to one another, all at once.

Calculate the volumetric (dimensional) weight of a parcel from its length, width and height (cm) and a volumetric divisor. Enter the actual weight too and the tool decides which figure (the larger one) is the chargeable weight. Supports air freight 6000, international courier 5000 and more.

Convert between in-situ (bank), loose, and compacted soil volumes in one step. Just pick a reference state and volume, enter the swell factor L and compaction factor C, and get every state at once. Handy for earthwork planning and checking cut, fill, and haul quantities.

Find the copier enlarge or reduce percentage between paper sizes. Just pick the original and target sizes—like A4 to A3 or A3 to A4—or enter a custom long edge, with a handy chart of common ratios.