How to say "computation" in Japanese

• 計算けいさんJLPT N3approx.Common
  noun, suru verb, transitive verbThe default word for calculation and computation in general: working out numbers, arithmetic, or machine computation. If you just mean 'computation' without any special nuance, this is almost always the word you want.
  旅行りょこうの総そう費用ひようを計算けいさんしてくれますか。↗

  Can you work out the total cost of the trip?
• 算出さんしゅつCommon
  noun, suru verb, transitive verbCovers computation in the sense of deriving a specific figure or value from data — a calculated result is 算出される. It is a noun (suru-verb) focused on the act of obtaining that figure, not on calculating in general.
  年金ねんきんの額がくは原則げんそくとして前年ぜんねんの物価ぶっか変動へんどうにスライドして算出さんしゅつされる。↗

  As a general rule, the pension amount is based on price changes in the previous year.
• 勘定かんじょうJLPT N3approx.Common
  noun, suru verb, transitive verbMatches 'computation' mainly through its sense of counting and reckoning, especially of money as in bill-paying. For abstract or technical computation it is usually not the word you want; think of it as counting or reckoning.
• 算定さんていCommon
  suru verb, transitive verb, no-adjectiveCovers computation in the sense of estimating or determining a quantity, such as an amount or value assessed from conditions. Closer to 'estimation' or 'determination of a figure' than to plain calculating.
  それは３００ドルかかると私は算定さんていした。↗

  I calculated that it would cost 300 dollars.

Use 計算 for ordinary calculation or computing of numbers, 算出 for deriving or working out a figure from data, 勘定 for counting or reckoning especially money, and 算定 for estimating or determining an amount.

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

• 計算けいさんcalculation
• 算出さんしゅつcalculation
• 勘定かんじょうcalculation
• 算定さんていcalculation
• 算用さんようcomputation
• コンピュテーションcomputation