Translation guide
The concept of accuracy in Japanese is expressed through words that emphasize precision, correctness, or exactness. The most common and versatile term is 正確さ (seikaku-sa), but other options like 精度 (seido) and 的確さ (tekikaku-sa) are used in specific contexts such as measurements, predictions, or hitting a target.
Expressing that something is free from mistakes or errors, or conforms to a standard or truth.
The most common and versatile noun for 'accuracy' in the sense of correctness, precision, and being error-free. Used for information, calculations, translations, etc.
この翻訳の正確さを確認してください。
Please check the accuracy of this translation.
データの正確さが最も重要です。
The accuracy of the data is most important.
Similar to 正確さ, but slightly more formal and often used in technical or official contexts. Interchangeable in many cases.
報告書の正確性を高める必要がある。
We need to improve the accuracy of the report.
Refers to precision or degree of accuracy, often used for measurements, instruments, or statistical data. Implies a quantitative aspect.
この時計の精度は非常に高い。
The accuracy of this watch is very high.
実験の精度を上げるために、何度も測定した。
To increase the accuracy of the experiment, we measured many times.
Expressing that an action, statement, or prediction is exactly right, on point, or hits the mark.
Emphasizes aptness, appropriateness, and being exactly right for the situation. Often used for judgments, advice, or shooting accuracy.
彼のアドバイスはいつも的確さに欠ける。
His advice always lacks accuracy (aptness).
シュートの的確さを磨く。
To improve the accuracy of one's shots.
Literally 'hit rate', used for the accuracy of predictions, forecasts, or guesses.
Expressing that a reproduction or representation is faithful to the original.
Means faithfulness or fidelity, used when accuracy means being true to the original, such as in translations, reproductions, or descriptions.
この映画は原作に忠実さを欠いている。
This movie lacks accuracy (fidelity) to the original work.
Means strictness or exactness, often used for scientific or mathematical accuracy where no deviation is allowed.
厳密さが求められる作業だ。
It's a task that requires accuracy (strict exactness).
正確さ (seikaku-sa) is general correctness. 精度 (seido) is precision/degree of accuracy, often for measurements. 的確さ (tekikaku-sa) is aptness or being on point. Use 正確さ for most situations; use 精度 for technical precision; use 的確さ for judgments or hitting a target.
The loanword アキュラシー (akyurashī) exists but is very rare and technical. It is not used in everyday Japanese. Stick to native terms.
情報の正確さを確認する必要があります。
We need to check the accuracy of the information.
このはかりの精度は0.1グラム以内です。
The accuracy of this scale is within 0.1 grams.
彼は非常に的確にボールを投げた。
He threw the ball with great accuracy.
天気予報の的中率はどのくらいですか。
What is the accuracy rate of the weather forecast?
Specifically refers to the accuracy of hitting a physical target, such as in shooting or military contexts.
ミサイルの命中精度が向上した。
The accuracy of the missiles has improved.