日にっ数すう

also: ひかず

に

っ

す

う

Common wordJLPTN1Freq.FrequencyTop 10,000

Meanings

number of days

Refers to a count of days, such as the length of a period or the total days needed.

〈事こと〉に日にっ数すうがかかるit takes (a certain number of) days for something
この手て続つづきには日にっ数すうがかかります。
This procedure takes a number of days to complete.
日にっ数すうを数かぞえるto count the number of days
出しゅっ発ぱつまでの日にっ数すうを数かぞえている。
I'm counting the number of days until departure.
日にっ数すうが足たりないthere aren't enough days
準じゅん備びするには日にっ数すうが足たりない。
There aren't enough days left to prepare.
日にっ数すうを計けい算さんするto calculate the number of days
入にゅう院いんした日にっ数すうを計けい算さんした。
I calculated the number of days spent in the hospital.

期き間かんN3
日数 counts the total number of days involved, while 期間 refers to the span or duration of time itself, which may be expressed in days, weeks, or months.
日ひにちN3
日数 is the formal, often written term for a number of days, while 日にち is the everyday word used in the same sense, as in 準備の日にちが足りない.

日ひ付づけN3
日数 is a count of how many days something takes, whereas 日付 refers to a specific calendar date.
日ひにちN3
日数 strictly means the number of days, while 日にち can mean either a specific date or, informally, a number of days, so learners may mix up the two.

日数Usage100%
- にっすう
  Standard kanji spelling with the common reading にっすう.
- ひかず
  Alternate reading ひかず is less common and may be encountered in older or literary contexts.
ひかず

Compound of 日 (day) and 数 (number). The reading にっすう is a standard on'yomi combination, while ひかず uses the kun'yomi for 日.