How to say "computer" in Japanese

• コンピュータJLPT N4approx.Common
  nounThe loanword and the everyday word for a computer as a machine; when you simply mean 'the computer', this is the natural choice.
  あ、またコンピューターが固かたまっちゃったよ。↗

  Argh! My computer froze up again.
• 電子計算機でんしけいさんきCommon
  nounThe full term, literally 'electronic calculating machine'; it sounds technical or official beside the loanword, and is the form met in technical and official writing about computers.
  電子計算機でんしけいさんきは人間にんげんの頭脳ずのうが計算けいさんするのとちょうど同おなじように計算けいさんする事ことが出来できる。↗

  The computer can figure just as the human brain does.
• 計算機けいさんきCommon
  nounA short form of 電子計算機, but on its own this word is really the term for a calculator; its 'computer' sense belongs to technical usage, so judge from context.

Use 「コンピュータ」 for a computer in general contexts; 電子計算機 is the full technical term for the same machine, while 計算機 is primarily a calculator and means 'computer' only as its abbreviation.

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

• コンピュータcomputer
• 電子計算機でんしけいさんきcomputer
• 電脳でんのうcomputer
• 電算でんさんcomputer
• 人工頭脳じんこうずのうmechanical brain
• 計算機けいさんきcomputer