1.
to exchange, to convert, to swap
To exchange one thing for another of equivalent or comparable value. Emphasizes conversion or swapping between things of the same category, such as currency exchange or converting units. Distinct from 変える (to change the nature of something) and 代える (to substitute one thing for another).
円をドルに換える。
To exchange yen for dollars.
古い切手を現金に換えた。
I converted old stamps into cash.
ポイントを商品券に換えることができます。
You can exchange points for gift certificates.
USAGE:
One of several かえる verbs that learners often confuse. The key distinction:
- 換える: to exchange or convert (swap A for B of comparable value)
- 変える: to change, to alter (transform the nature of something)
- 代える: to substitute (use B in place of A)
- 替える: to replace (put a new one where the old one was)
換える emphasizes the idea of exchange or conversion, especially when value is preserved. It is most natural with currency, units of measurement, and tradeable items.
COMMON COLLOCATIONS:
- 両替: currency exchange (noun form using the same kanji concept)
- 換算する: to convert (units, figures)
- 換気する: to ventilate (exchange air)
- ポイントを換える: to redeem points