Unit Converters calculators
Length, weight, volume, temperature, area, speed, pressure, energy and data.
115 free tools
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Amps to Watts ConverterTurn current and voltage into watts for DC, single- or three-phase ACArea ConverterConvert square feet, square meters, acres, hectares and moreCelsius to FahrenheitConvert °C to °F instantly, with the formula and a quick reference chartCM to Feet and InchesTurn centimeters into feet and inches — perfect for heightsCM to InchesConvert centimeters to inches exactly, plus feet and fractionsCups to ML ConverterConvert US, metric and imperial cups to milliliters and backData Storage ConverterConvert bytes, KB, MB, GB, TB and binary KiB, MiB, GiB instantlyFahrenheit to CelsiusConvert °F to °C instantly, with the formula worked out for your numberFeet to MetersConvert feet (and inches) to meters with the exact 0.3048 factorFluid Ounces to Cups ConverterConvert fl oz to cups, pints, quarts and gallons in one stepGallons to LitersConvert US or imperial gallons to liters — and see the differenceGrams to OuncesConvert grams to ounces and pounds for cooking, postage and moreHeight ConverterConvert height between cm and feet-and-inches in either directionInches to CMConvert inches — including fractions like 3/8 — to centimetersKG to LBS ConverterConvert kilograms to pounds, pounds and ounces, and stone instantlyKM to Miles ConverterConvert kilometers to miles for running, driving and travelKM/H to MPH ConverterConvert kilometers per hour to miles per hour, m/s and knotsLBS to KG ConverterConvert pounds (and ounces) to kilograms with the exact factorLength ConverterConvert any length between metric and imperial units in one stepLiters to Gallons ConverterConvert liters to US and imperial (UK) gallons side by sideMB to GB ConverterConvert megabytes to gigabytes in decimal (1000) or binary (1024) unitsMeters to Feet ConverterConvert meters to feet, and to feet and inches, instantlyMG to Grams ConverterConvert milligrams, grams, micrograms and kilograms without decimal slipsMiles to KM ConverterConvert miles to kilometers exactly — races, road trips and moreML to OZ ConverterConvert milliliters to US and UK fluid ounces, cups and spoonsMM to Inches ConverterConvert millimeters to decimal and fractional inches for tools and partsMPH to KM/H ConverterTurn miles per hour into km/h, m/s, knots and ft/s instantlyNewton Meters to Foot PoundsConvert torque specs between Nm, ft-lb and in-lb for any wrenchOunces to Pounds ConverterConvert oz to lbs, pounds-and-ounces, grams and kilogramsSquare Feet to Acres ConverterConvert sq ft to acres and acres to sq ft for lots and landSquare Feet to Square Meters ConverterConvert sq ft to m² for homes, rooms, flooring and listingsSquare Meters to Square Feet ConverterConvert m² to sq ft for apartments, rooms, offices and landTablespoons to Teaspoons ConverterConvert tbsp, tsp and ml for US, metric and Australian spoonsTemperature ConverterConvert °F, °C, K and °R instantly with everyday reference pointsVolume ConverterConvert liters, gallons, cups, mL and cubic feet in one placeWatts to Amps ConverterFind the current any load draws — DC, single-phase or three-phaseWeight ConverterConvert kg, lbs, oz, grams, stone and tons with exact factors
More unit converters tools
Acres to Hectares ConverterConvert acres to hectares, square meters and km² for land and farmsAcres to Square Feet ConverterConvert acres to sq ft or sq ft to acres for lots and landAWG to mm² ConverterConvert American Wire Gauge to mm², diameter and resistance — and backBar to PSI ConverterConvert bar to psi, kPa and atm for tires, pumps and compressorsBits to Bytes ConverterConvert bits, bytes, Mb, MB, GB and GiB — including internet speedsBTU to Watts ConverterConvert BTU/hr to watts, kW and AC tons for heaters and air conditionersCooking Measurement ConverterConvert cups, tablespoons, teaspoons, ml and fl oz — and scale recipesCubic Yards to Cubic Feet ConverterConvert yd³ to ft³ and m³ for concrete, mulch, soil and gravelData Transfer Rate ConverterConvert Mbps to MB/s, Gbps and more — and see real download timesDegrees to RadiansConvert degrees to radians as a decimal and as an exact multiple of πEnergy ConverterConvert joules, calories, kWh, BTU, therms and electronvolts in one stepFahrenheit to Kelvin ConverterConvert °F to kelvin, Rankine and Celsius with the exact formulaFeet to CM ConverterConvert feet and inches to centimeters using the exact 30.48 factorGallons to Cubic Feet ConverterConvert US or UK gallons to cubic feet and back, exactlyGB to TBConvert gigabytes to terabytes and back, in decimal and binary unitsGrams to PoundsConvert grams to pounds, and to pounds + ounces for kitchen and postal scalesHectares to AcresConvert hectares to acres, plus square feet, square meters and square milesHP to kWConvert mechanical, metric and electric horsepower to kilowattsInch Fraction ConverterTurn decimal inches into tape-measure fractions — and fractions back to decimalsInches to FeetConvert inches to decimal feet and to feet-and-inches in one stepInches to MMConvert decimal or fractional inches like 1 3/8" to millimeters exactlyJoules to CaloriesConvert joules to calories, kilocalories and back in one stepKB to MBConvert kilobytes to megabytes in decimal (1000) or binary (1024) unitsKG to StoneConvert kilograms to stones and pounds the way UK scales show weightkJ to kcalTurn kilojoules on a food label into calories (kcal) — and backKnots to MPHConvert knots to mph, km/h and m/s for boating, aviation and weatherkPa to PSIConvert kilopascals to psi, bar and atm — ideal for tyre pressurekW to HPConvert kilowatts to mechanical horsepower (hp) and metric PSkWh to BTU ConverterConvert kilowatt-hours to BTU, therms and megajoules in one stepLight Year ConverterConvert light-years, parsecs, AU, kilometers and miles in one placeLumens to Watts ConverterFind the wattage you need for any brightness — and what it costs to runMeters to Inches ConverterConvert meters to inches, or inches to meters, with feet + inches tooMetric Ton to Short Ton ConverterConvert tonnes to US short tons and UK long tons — and backMiles to Feet ConverterConvert miles to feet and feet to miles — 5,280 ft in every mileMM to CM ConverterConvert millimeters to centimeters, or cm to mm, plus inchesOunces to GramsConvert ounces to grams exactly — kitchen, postal or troy ouncesOZ to MLConvert US or UK fluid ounces to ml for drinks, recipes and baby bottlesPascal to Atmosphere ConverterConvert pascals to atmospheres, torr, mmHg, inHg, bar and psiPounds to OuncesConvert pounds to ounces and decimal pounds to pounds-and-ouncesPower ConverterConvert watts, kilowatts, horsepower and BTU/h in one stepPressure ConverterConvert psi, bar, kPa, atm, mmHg and inHg with exact factorsPSI to BarConvert psi to bar for tyres, compressors and pressure gaugesRefrigeration Tons to BTU ConverterTurn AC tonnage into BTU/hr and kW, or BTU back into tonsSpeed ConverterConvert mph, km/h, m/s, knots, ft/s and Mach instantlyStone to KGConvert stones and pounds to kilograms for body weightTime Unit ConverterConvert seconds, minutes, hours, days, weeks, months and yearsTorque ConverterConvert N·m, ft-lbs, in-lbs and kgf·m for any torque specTroy Ounces to GramsConvert troy ounces to grams and back for gold, silver and platinumVolts to Watts ConverterFind watts from volts and amps or volts and ohms, DC or ACYards to MetersConvert yards to metres exactly — for sport, fabric and distancesAngle ConverterConvert degrees, radians, gradians, arcminutes and mils — with DMSCarat to GramsConvert gemstone carats to grams, milligrams and points — and backCC to Cubic InchesConvert engine displacement between cc, liters and cubic inchesCelsius to KelvinConvert °C to K and K to °C instantly, with Fahrenheit and Rankine tooCubic Feet to Cubic MetersConvert ft³ to m³ and m³ to ft³ for shipping, storage and gasDensity ConverterConvert density between kg/m³, g/cm³, lb/ft³, lb/gal and lb/in³Flow Rate ConverterConvert GPM, L/min, L/s, CFM and m³/h in one stepFoot-Candles to Lux ConverterConvert foot-candles, lux, phot and more for lighting designForce ConverterConvert newtons, kilonewtons, pound-force, kgf, kips and dynesFrequency ConverterConvert Hz, kHz, MHz, GHz, RPM and rad/s, with period and wavelengthGrains to GramsConvert grains to grams and grams to grains for ammo, medicine and archeryInches of Mercury to MillibarsConvert barometric pressure between inHg, millibars and hPaLux to Lumens ConverterFind the lumens a room needs for a target lux, or the lux your lights giveMach Number ConverterConvert Mach to mph, km/h and knots using the real speed of soundMeters per Second ConverterConvert m/s to km/h, mph, knots and ft/s — and back to m/sMeters to YardsConvert meters to yards instantly, with feet, inches and a lookup tableMetric Prefix ConverterConvert between SI prefixes like milli, micro, nano, kilo and gigammHg to kPa ConverterConvert mmHg and torr to kPa, inHg, hPa, psi and atm — and backNautical Miles ConverterConvert nautical miles to miles and kilometres — and back — exactlyPPM ConverterConvert ppm to mg/L, ppb, percent and more for water and airQuarts to Liters ConverterConvert US and imperial quarts to liters — and liters to quartsRadians to Degrees ConverterConvert radians or multiples of π to degrees, DMS and gradiansRadiation Unit ConverterConvert sieverts and rem, grays and rads, becquerels and curiesSquare Feet to Square YardsConvert sq ft to sq yd for carpet and flooring — with waste allowanceSquare Miles to Square KilometersConvert sq mi to km², acres and hectares — or km² back to square milesTons to Pounds ConverterConvert short tons, long tons and metric tonnes to pounds and kgTypography Unit ConverterConvert points, picas, pixels, em, inches and mm for type and layoutViscosity ConverterConvert dynamic and kinematic viscosity, including cP ↔ cSt with density