Translation guide
The English word 'logical' describes something that follows clear reasoning, makes sense, or is consistent. In Japanese, there is no single perfect equivalent; the best choice depends on whether you mean a person, argument, conclusion, or action.
Describing a conclusion, decision, or action that is sensible and well-founded.
The most direct translation for 'logical' in the sense of following logic or reason. Used for arguments, thinking, or conclusions.
His explanation is very logical.
Literally 'the line of reasoning goes through', meaning something is coherent and makes sense. Common in everyday speech.
What you're saying is logical.
Means 'in accordance with reason'. Slightly formal, often used for decisions or actions that are reasonable.
That decision is logical.
Describing an argument, story, or system that is internally consistent.
Describing a person who thinks and acts based on reason.
Describing something that is the expected or inevitable outcome.
While 論理的 is the direct translation, it can sound stiff in casual conversation. For everyday 'that makes sense', use 筋が通っている or なるほど (I see).
論理的 is neutral or positive (logical), while 理屈っぽい often implies someone is overly argumentative or nitpicky. Be careful with the nuance.
His argument is logical (consistent).
Means 'argumentative' or 'tending to rely on logic too much'. Can be slightly negative, implying someone is overly rational.
Can sound critical; use with care.
He's so logical that conversations get long.
That was the logical (inevitable) outcome.