Here’s the Perfect Ways to Figure Out: 達成たっせい and 成果せいか

2019年6月18日2026年4月22日

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Yuka

I’ve seen both 達成 and 成果 used when talking about achieving things. Are they interchangeable?

Rei

They’re related but different. 達成 is about reaching a goal — the act of achieving it. 成果 is the result or fruit of your efforts — what you got out of it. Let me explain!

Both 達成 (たっせい / tassei) and 成果 (せいか / seika) relate to success and achievement — but one focuses on the act of achieving, while the other focuses on the outcome produced.

Word	Reading	Core Meaning
達成	たっせい (tassei)	Achievement — reaching a goal (process/act)
成果	せいか (seika)	Result — the fruit/outcome of efforts

TOC

達成 (たっせい): Reaching a Goal

達成 emphasizes the act of reaching or accomplishing a specific goal or target. The focus is on the completion of the effort — crossing the finish line.

Pattern: 〜を達成する / 〜の達成

Japanese	English
目標を達成した。	I achieved my goal.
夢を達成するために努力する。	I work hard to achieve my dream.
売上目標を達成しました。	We achieved our sales target.
達成感が嬉しい。	The sense of achievement is gratifying.

Key phrase: 達成感 (tasseikan) = the feeling of accomplishment / sense of achievement — a very natural expression.

Yuka

So 達成 is about hitting the target — like passing a finish line?

Rei

Exactly! There’s a specific goal, and 達成 marks the moment you’ve reached it. It’s about the action of achieving.

成果 (せいか): The Result / Fruit of Effort

成果 focuses on the results, outcomes, or fruits produced by one’s efforts. It’s about what came out of the work — the tangible or measurable results.

Pattern: 〜の成果 / 成果を出す / 成果が出る

Japanese	English
研究の成果が出た。	The research yielded results.
努力の成果を見せる。	To show the fruits of one’s efforts.
成果を上げる。	To produce results / achieve results.
これが練習の成果だ。	This is the result of practice.

Key phrase: 成果を出す / 成果を上げる = to produce/deliver results — common in business and academic contexts.

Yuka

So 成果 is what you actually got from the effort — the output?

Rei

Right! You could 達成 a goal but the 成果 might be greater or lesser than expected. The goal and the outcome aren’t always the same thing.

Side-by-Side Comparison

Feature	達成	成果
Focus	Act of reaching a goal	Outcome / results produced
Question it answers	Did you reach the target?	What did you get from the effort?
Grammar	Verb: 達成する; Noun: 達成	Noun: 成果 (with 出す/上げる)
Context	Goals, targets, dreams	Research, work, training, study

Natural Usage in Context

目標を達成した → I achieved my goal (the target was met)
努力の成果が出た → My efforts produced results (the outcomes came through)
達成感と成果の両方が大事 → Both the sense of achievement and results matter

Quick Quiz

達成 or 成果?

1. 1年間の勉強の___が試験結果に出た。(The results of a year of studying showed in the test.)
2. プロジェクトの目標を___した。(We achieved the project’s target.)
3. ___を出すためには継続が大切だ。(Consistency is key to producing results.)

Answers: 1. 成果 (outcome/fruit) 2. 達成 (achieved the goal) 3. 成果 (producing results)