How to say "horsepower" in Japanese

• 馬力ばりきCommon
  nounThe ordinary word for horsepower as a unit of engine output, the figure quoted for car and motorcycle engines; this is the word you want in almost every context.
  私の車くるまは馬力ばりきが足たらない。↗

  My car is deficient in horsepower.
• ホースパワー
  nounA katakana loanword covering the same unit, including the metric PS; less common than 馬力, and seldom the word you need unless a source itself uses the loanword.
• ＨＰエイチ・ピー
  nounThe initialism for horsepower, seen mainly in written specifications; in Japanese ＨＰ is very often read as 'home page', so it can mislead and 馬力 is usually clearer.

For horsepower as an engine-power unit, 馬力 is the common everyday word; 「ホースパワー」 is a less common loanword for the same unit including metric PS, and ＨＰ is an abbreviation that risks being read as 'home page'.

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

• 馬力ばりきhorsepower
• ホースパワーhorsepower
• ＨＰエイチ・ピーhorsepower