Travel Units

Pour un voyage ou une mission à l’étranger, choisissez la région d’arrivée : chaque onglet de conversion se règle sur les unités utiles. Vous pouvez ne rien choisir et simplement vous exercer.

Length, weight, temperature and the other conversions run in your browser. Currency rates are requested from a public rate service; the amounts you type are not stored on our servers.

Choosing a country auto-selects the units in each tab.

You can use the tool without choosing.

Choosing a country auto-selects the units in each tab.

You can use the tool without choosing.

Conseils

The Sign on the Road Is Already Converted

Type the kilometres from the map and the miles on a US or UK sign are already there. A conversion is the same distance written two ways — except temperature, whose zero is not shared.

The Weather App and the Sign Disagree

A 35 °C heat day in Tokyo is not "35" on a US forecast. Zero Celsius is water freezing; zero Fahrenheit is a different day. You multiply and then shift.

The Airline Printed Kilograms

A 23 kg checked bag is about 50 lb. Weigh the suitcase in the unit on the ticket, not the one on the bathroom scale at the hotel.

The Pump and the Till Use Local Units

US pumps sell gallons; most of the world sells litres. The card machine wants local money. Convert before you stand in the queue — the amounts stay in this browser.

Cas d'utilisation courants

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A First Drive After Landing

Narita to a US highway: the rental GPS talks kilometres, the signs are miles, and 35 °C on the phone is Fahrenheit on the car display.

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The Bag at Check-in

A 23 kg limit is about 50 lb. Convert before you pay for extra weight at the desk.

Fuel on a Rental Car

A US gallon is about 3.8 L; a UK gallon is about 4.5 L. The pump and the contract may not use the same one.

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What to Pack for the Forecast

A US forecast in Fahrenheit is not a Japanese heat-day number. Convert the high before you leave the coat at the hotel.

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The Price on the Shelf

Yen, dollars, or euros — type the tag and the other currency is already there. Treat the rate as a guide, not a bank quote.

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How Big the Room Is

A listing in square feet is not the m² on a Japanese booking site. Convert the floor area before you compare hotels.

Questions fréquemment posées

What changes when I pick a country?
If you choose your country and a destination, each tab except data size auto-selects those units. You can leave both blank and still convert.
Why is 0 °C not the same as 0 °F on a weather app?
The zeros mark different days. 0 °C is water freezing. 0 °F is about −18 °C. You multiply and then shift; it is not a plain ratio like km and miles.
What is the difference between a US gallon and a UK gallon?
A US gallon is about 3.79 L. A UK (imperial) gallon is about 4.55 L. A rental-car contract and a pump can mix them — this page has both.
Where do the currency rates come from?
From a public daily rate, requested in the browser. If that request fails, a reference rate is used and you can type your own. Treat it as a guide, not a bank quote.
Are the figures I convert sent to a server?
Length, weight, temperature and the other conversions stay in the browser. Currency rates are fetched from a public rate service; the amounts you type are not stored on our servers. Last-used values may be saved only on this device.
Does the UK use miles or kilometres?
Road signs in the UK are in miles per hour and miles. Weather is usually Celsius. This page keeps both, so a drive and a forecast do not have to share one system.