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RapideTools

Convertisseur de longueur

Convertissez mm, cm, m, km, pouces, pieds, miles.

Enter a value to convert instantly between metric and imperial units of length — millimeters, centimeters, meters, kilometers, inches, feet, yards and miles. Everything runs locally in your browser.

Votre saisie est traitée localement dans votre navigateur — rien n'est envoyé, stocké ni journalisé.

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Comment ça marche

  1. 1 Type a value.
  2. 2 Pick the unit to convert from and to.
  3. 3 Copy the result, or use Swap to reverse.

Cas d'usage courants

  • Convert measurements for DIY or sewing.
  • Switch between metric and imperial.
  • Check distances in miles or kilometers.
  • Convert dimensions for shipping.

Questions fréquentes

Is my input sent to a server?

No. Every calculation runs locally in your browser — your input is never uploaded, stored or logged.

Which conversion factors are used?

Exact international definitions, e.g. 1 inch = 2.54 cm and 1 mile = 1609.344 m.

Is it really free?

Yes — free, with no signup and no limits.