How to say "estimation" in Japanese

Choosing the right word
  • 予測よそくJLPT N3approx.Common
    noun, suru verb, transitive verbCovers the predicting sense of estimation: forming a view about future or unknown outcomes such as weather, demand, or trends. It emphasizes forecasting rather than computing a value.
    何なんが起おこるか予測よそくできない。↗
    We cannot predict what will happen.
  • 見積もりみつもりJLPT N1approx.Common
    nounThe everyday word for an estimate in the commercial sense: a quoted price or cost for work, repairs, or services. When someone asks for an estimate of a bill, this is the word.
    特別価格とくべつかかくの見積みつもりです。↗
    We have quoted special prices.
  • 試算しさんCommon
    noun, suru verb, transitive verbA trial or preliminary calculation — a rough working-out of figures to see what the total would be, as in budgeting or cost checks. Not a price quote itself.
  • 算定さんていCommon
    suru verb, transitive verb, no-adjectiveSystematic calculation or computation of a quantity, such as amounts or values determined by set rules or procedures. Formal, often bureaucratic or technical in flavor.
    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.
  • 推計すいけいCommon
    noun, suru verb, transitive verbAn estimate derived statistically, as in official population or economic figures inferred from data rather than measured directly. Formal, characteristic of statistics and reports.

Use 「見積もり」 for price quotes, 予測 for prediction of future outcomes, 試算 for rough preliminary figures, 算定 for systematic calculation, and 推計 for statistical estimates.

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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