How to say "weekday" in Japanese

Choosing the right word

平日へいじつJLPT N2approx.Common
adverb, nounCovers the basic sense of 'weekday': an ordinary day that is not a weekend or a public holiday. This is the word for talking about work, school, or schedules on such days.
平日へいじつ料金りょうきんと休日きゅうじつ料金りょうきんで、１万いちまん円えんも違ちがうんだ。↗
You have to pay 10,000 yen extra on holidays.
ウィークデーCommon
nounThe katakana rendering of the English word, covering the same ground as 平日: days other than weekends and holidays. Either word works; when unsure, 平日 is the safer choice.

Both words mean an ordinary day that is not a weekend or holiday. 平日 is the native term and the usual choice in sentences; 「ウィークデー」 is the katakana loanword of the English word, essentially interchangeable.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents

平日へいじつweekday
ウィークデーweekday
週日しゅうじつweekday
月火水木金げつかすいもくきんweekday

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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