Travel unit converter
Choose where you are from and where you are going, and every tab switches to those units. Skip that if you only want to convert a number.
Choosing a country sets the units in each tab. (The converter works without a country.)
Choosing a country sets the units in each tab. (The converter works without a country.)
Tips
Weigh the bag in the unit printed on the ticket
A 23 kg checked-bag limit is about 50 lb. A hotel scale may read pounds. If the airline printed kilograms, weigh in kilograms — or convert before you reach the desk.
A gallon at the pump is not one size
A US gallon is about 3.8 L; a UK gallon is about 4.5 L. The rental contract and the pump can disagree. Check which gallon you are buying before you compare the price to liters at home.
The GB on the box is not the GB on your phone
A 128 GB plan or drive is counting by 1,000. Many phones count by 1,024, so the same files look smaller on the screen. Two names, not two countries.
A 35 on a US forecast is about 2 °C
US weather is Fahrenheit. 35 is a coat day, not a 35 °C heat wave. That heat shows up as about 95. You cannot scale the number the way you scale miles and kilometers.
Common Use Cases
The first drive after landing
The 70 on a European sign is 70 km/h. Set a mile speedometer to 70 by mistake and the car is doing 112 km/h. Check the units before you drive abroad, or a motorcycle cop will be right behind you.
The bag at check-in
Before you pay for extra weight, see what 23 kg is in pounds — or what 50 lb is in kilograms — using the unit on the ticket. Skip a calm conversion and you lose money.
Fuel on a rental car
A California pump sells US gallons. A UK contract may still say imperial gallons. Check which gallon you are buying before you compare the price to liters at home.
What to pack for the forecast
If you think in Celsius, a US high of 95 looks like a disaster. Convert first: it is about 35 °C. Then decide on the coat and the shirt.
The price on the tag
Type the dollar, euro, or pound on the tag to see it in the money you think in. Use it to decide, not as the rate your card will actually charge.
How big is the room?
A 400 on a US listing is square feet. Read it as 400 m² and it looks like a palace — it is about the size of a small studio. Convert before you compare two hotels.