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.
シートベルト
seat belt
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.
シートベルトを締めてください。
Please fasten your seat belt.
シートベルトを着用してください。
Please wear your seat belt.
A more formal or technical term, often seen in written instructions or official announcements. Less common in casual speech.
座席ベルト着用のサインが点灯しました。
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'.
車に乗ったら、すぐにシートベルトを締めてね。
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'.
シートベルトした？
Did you put on your seat belt?
A formal expression meaning 'to wear a seat belt'. Often used in announcements or written warnings.
シートベルトを必ず着用してください。
Please be sure to wear your seat belt.
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'.
シートベルト着用義務
Seat belt use is mandatory.
A friendly reminder meaning 'Don't forget your seat belt'.
出発前にシートベルトを忘れずに。
Don't forget your seat belt before we leave.
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.