How to say "interval" in Japanese

Choosing the right word
  • 間かんCommon
    noun, suffixWith the reading かん, this covers an interval as a period of time between events, as in scheduled gaps. It is a natural way to express a time interval in counted or measured contexts.
    The play ran for six months.
  • 間あいだJLPT N4approx.Common
    nounWith the reading あいだ, this covers the interval between things in space or time — the gap, space, or distance separating two items. It emphasizes what lies between two points rather than a measured span.
    彼かれはメアリーとトムの間あいだに座すわった。↗
    He was sitting between Mary and Tom.
  • 距離きょりJLPT N1approx.Common
    nounThis is really 'distance' or 'range'; the gloss 'interval' applies to spatial intervals between two points. Use it when the interval is a measurable physical separation, not a stretch of time.
    4マイルはかなりの距離きょりだ。↗
    Four miles is a good distance.
  • 期間きかんJLPT N3approx.Common
    nounThis covers an interval understood as a period or term — a defined stretch of time, such as a term of study or a contract period. It suits a duration rather than the gap between two events.
    治なおるのにどのくらいの期間きかんがかかりますか。↗
    How long will it take to get well?
  • 合間あいまJLPT N1approx.Common
    no-adjectiveThis covers an interval as a short break or pause squeezed between busier stretches — a spare moment. It is the natural choice when 'interval' means a brief respite within a schedule.
    勉強べんきょうの合間あいまに私はテレビをみた。↗
    I watched television during a break in my studies.

Use 間(かん) for a time span between events, 間(あいだ) for gaps in space or time, 距離 for spatial intervals, 期間 for a stretch of time, and 合間 for short breaks.

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

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

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