How to say "width" in Japanese

• 幅はばJLPT N3approx.Common
  nounThe most general word for width or breadth of a physical object, such as a road, ribbon, or piece of furniture. When you simply need to state how wide something is, this is the word to reach for.
• 横幅よこはばCommon
  nounSpecifically the horizontal, side-to-side width of something, as opposed to its height or depth. Natural when giving the dimensions of a screen, room, box, or webpage.
  その長ながさと横幅よこはばを１０で割わりなさい。↗

  Divide its length and breadth by ten.
• 間口まぐちCommon
  nounThe width of the front of a building or plot of land — its frontage facing the street. Use this only for architecture and real estate, not for everyday objects.
  間口まぐちも広ひろいが奥行おくゆきも同様どうように深ぶかい。↗

  It's as deep as it is wide.
• 横よこJLPT N5approx.Common
  nounEssentially means side-to-side as opposed to front-to-back or up-and-down; it can be used for width in that contrastive sense, but it is not the neutral way to say width.
  道みちが濡ぬれていたので、車くるまは横よこにスリップしたにちがいない。↗

  As the road was wet, the car must have slipped sideways.
• 広さひろさJLPT N2approx.Common
  nounReally means expanse or how spacious something is; glossed as width, but for asking or stating a width it is seldom the word you want. Better suited to talking about overall size.

Use 幅 for width in general, 横幅 for side-to-side dimensions, 間口 for a building's or plot's frontage, 横 for horizontal as opposed to vertical, and 「広さ」 when speaking of how spacious something is.

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

• 幅はばwidth
• 横幅よこはばbreadth
• 間口まぐちfrontage
• 幅員ふくいんwidth (of a road, bridge, etc.)
• 広狭こうきょうwidth
• 横周おうしゅうwidth
• 横よこside-to-side (as opposed to front-to-back)
• 広さひろさwidth