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Convert Any Unit — Free Online Unit Converter

Free online unit converter. Convert weight, length, temperature, volume, area, speed, data, and time units instantly.

Conversion Categories

W
Weight
6 conversions
L
Length
6 conversions
T
Temperature
3 conversions
V
Volume
5 conversions
A
Area
3 conversions
S
Speed
3 conversions
D
Digital Storage
4 conversions
H
Time
4 conversions

Popular Conversions

5 kg to lbs = 11.0231 lbs10 lbs to kg = 4.5359 kg100 cm to in = 39.3701 in10 km to mi = 6.2137 mi100 °C to °F = 212.00 °F72 °F to °C = 22.2222 °C5 L to gal = 1.3209 gal10 m to ft = 32.8084 ft26 mi to km = 41.8428 km100 g to oz = 3.5274 oz12 in to cm = 30.48 cm6 ft to m = 1.8288 m100 m² to ft² = 1,076.39 ft²100 km/h to mph = 62.1371 mph2 cup to mL = 473.176 mLGigabytes to MegabytesKilograms to PoundsCelsius to FahrenheitKilometers to MilesLiters to GallonsPounds to KilogramsInches to CentimetersFahrenheit to CelsiusMilliliters to Fluid OuncesAcres to Hectaresmph to km/hHours to MinutesMegabytes to GigabytesDays to HoursMeters to Feet

All Conversions

Weight

Kilograms to PoundsPounds to KilogramsGrams to OuncesOunces to GramsPounds to OuncesOunces to PoundsKilograms to StoneStone to KilogramsMilligrams to GramsGrams to MilligramsMetric Tons to KilogramsKilograms to Metric Tons

Length

Centimeters to InchesInches to CentimetersMeters to FeetFeet to MetersKilometers to MilesMiles to KilometersMillimeters to CentimetersCentimeters to MillimetersYards to MetersMeters to YardsInches to FeetFeet to Inches

Temperature

Celsius to FahrenheitFahrenheit to CelsiusCelsius to KelvinKelvin to CelsiusFahrenheit to KelvinKelvin to Fahrenheit

Volume

Liters to GallonsGallons to LitersMilliliters to Fluid OuncesFluid Ounces to MillilitersCups to MillilitersMilliliters to CupsTablespoons to MillilitersMilliliters to TablespoonsLiters to QuartsQuarts to Liters

Area

Square Meters to Square FeetSquare Feet to Square MetersAcres to HectaresHectares to AcresSquare Kilometers to Square MilesSquare Miles to Square Kilometers

Speed

km/h to mphmph to km/hm/s to km/hkm/h to m/sKnots to km/hkm/h to Knots

Digital Storage

Megabytes to GigabytesGigabytes to MegabytesGigabytes to TerabytesTerabytes to GigabytesKilobytes to MegabytesMegabytes to KilobytesBits to BytesBytes to Bits

Time

Hours to MinutesMinutes to HoursDays to HoursHours to DaysWeeks to DaysDays to WeeksYears to DaysDays to Years

Frequently Asked Questions

How does unit conversion work?
Unit conversion uses a mathematical relationship (conversion factor) between two units. Multiply the value by the conversion factor to get the equivalent in the target unit. For example, to convert kg to lbs, multiply by 2.20462.
How do I convert Celsius to Fahrenheit?
Use the formula: °F = (°C × 9/5) + 32. For example, 100°C = (100 × 9/5) + 32 = 212°F.
How many kilometers are in a mile?
One mile equals approximately 1.60934 kilometers. Conversely, one kilometer equals approximately 0.621371 miles.
What is the difference between fluid ounces and ounces?
Fluid ounces measure volume (liquid capacity), while ounces measure weight (mass). They are different measurement types and cannot be directly converted without knowing the density of the substance.
Are the conversion factors exact?
Most conversion factors we use are accurate to at least 6 significant digits, which is precise enough for everyday and professional use. Some conversions (like inches to centimeters: exactly 2.54) are defined exactly.
Is this converter free to use?
Yes, completely free with no sign-up required. All conversions are instant and include step-by-step explanations so you can understand the math.