Translation guide
The most common and natural way to say 'bicycle' in Japanese is 自転車 (じてんしゃ). This covers most everyday situations. There are also specific terms for different types of bikes, but 自転車 is the safe default.
Referring to a standard bicycle for everyday use.
The standard, all-purpose word for 'bicycle'. Use this in almost any context.
I commute by bicycle every day.
This bicycle is very light.
Casual slang for 'bicycle', common in everyday conversation among friends.
Let's go by bike.
In some contexts, especially among older speakers or in certain regions, バイク can refer to a bicycle, but it usually means 'motorcycle'. Use with caution.
Usually means 'motorcycle'. Only use for 'bicycle' if the context is very clear.
When I was a kid, I often played with my bike.
Referring to a particular kind of bicycle, such as electric, folding, or road bike.
Electric bicycle (e-bike). Often shortened to 電チャリ in casual speech.
Electric bicycles make hills easy.
Folding bicycle.
Road bike (racing bicycle).
A typical Japanese utility bicycle, often with a basket, used for shopping and errands. Literally 'mom's bike'.
Expressing the action of riding a bicycle.
The English word 'bike' can mean either bicycle or motorcycle. In Japanese, バイク usually means motorcycle. Use 自転車 for bicycle to avoid confusion.
Can I bring a folding bicycle on the train?
On weekends I ride long distances on my road bike.
ママチャリに子供を乗せて買い物に行く。
I go shopping with my child on the mamachari.