Convertisseurs d’unités

Convertissez longueur, aire, volume, poids, température, vitesse, pression, énergie et données, ainsi que mesures culinaires et tailles de chaussures et vêtements.

117 calculatrices · 399 exemples vérifiés

Unités courantes

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Conversions courantes

Choisir une calculatrice : Conversions

Match both units and the direction

A dedicated conversion page is quickest when you already know the input and output units. The broader length, weight or volume tool is better for comparing several units. Read the label on the starting field before entering a number: converting grams to kilograms divides by a thousand, while the reverse multiplies. Square and cubic units need squared and cubed factors. A cooking volume cannot become a mass without identifying the ingredient and its density.

Length units · Weight units · Ingredient conversions

Check the convention behind the abbreviation

US and imperial gallons are different volumes. Decimal GB and binary GiB are different storage units. Temperature conversions include offsets, and fuel economy reverses the relationship between distance and fuel used. The conversion chart provides useful reference values, while the formula shows the operation. Exact unit definitions avoid a conversion-factor error, but they cannot improve the precision of the original measurement. Round only after the full conversion.

Temperature scales · Storage prefixes · Efficacité énergétique du carburant

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