Translation guide
In Japanese, 'seat belt' is most commonly expressed with シートベルト, a loanword from English. The native term 座席ベルト is also used, especially in formal or technical contexts. When giving instructions or reminders, the verb 締める (to fasten) is often used.
Referring to the safety belt in a vehicle or aircraft.
The most common and natural term for 'seat belt' in everyday Japanese. Used in cars, airplanes, etc.
Please fasten your seat belt.
Please wear your seat belt.
A more formal or technical term, often seen in written instructions or official announcements. Less common in casual speech.
The seat belt sign has been turned on.
Expressing the action of putting on or securing a seat belt.
The standard verb for fastening a seat belt. 締める means 'to tighten' or 'to fasten'.
Fasten your seat belt as soon as you get in the car.
A more casual way to say 'put on a seat belt'. する is a general verb for 'do', but here it means 'put on'.
Did you put on your seat belt?
A formal expression meaning 'to wear a seat belt'. Often used in announcements or written warnings.
Common phrases used in signs, announcements, or when reminding someone.
A short, common phrase seen on signs or stickers meaning 'Seat belt use' or 'Wear seat belt'.
Seat belt use is mandatory.
A friendly reminder meaning 'Don't forget your seat belt'.
The verb 締める (しめる) is the most natural choice for fastening a seat belt. Avoid literal translations like 'put on' (着る) which are used for clothing.
Please be sure to wear your seat belt.
Don't forget your seat belt before we leave.