Translation guide
Expresses an upper limit, meaning 'not more than' or 'at maximum.' Used to indicate the greatest possible amount, number, or degree.
Indicate that something is at most a certain amount or number, not exceeding it.
Common adverb meaning 'at most' or 'only.' Often used with numbers or quantities to show a modest upper limit. Can also imply 'at best' in a dismissive tone.
この仕事はせいぜい３日で終わります。
This job will take at most three days.
彼はせいぜい５０歳くらいだ。
He is at most about 50 years old.
Literally 'even if many,' used to set an upper bound. More formal than せいぜい. Often used in written or polite speech.
参加者は多くても２０人でしょう。
There will be at most 20 participants.
Used specifically for prices or heights, meaning 'at most (in terms of cost/height).'
このバッグは高くても１万円です。
This bag costs at most 10,000 yen.
Express that something is not impressive, merely 'at best' a certain level.
When used with non-numerical evaluations, it implies 'at best' or 'nothing more than.' Often has a negative or dismissive nuance.
彼の英語はせいぜい中学レベルだ。
His English is at best junior high school level.
それはせいぜい趣味の範囲だ。
That's at most just a hobby.
Expresses that something is 'only' or 'merely,' often belittling its importance. Used before nouns.
State an absolute upper limit in formal contexts, such as rules or specifications.
Means 'at maximum' or 'up to.' Used in formal, technical, or written contexts to specify a limit.
このエレベーターは最大で１０人まで乗れます。
This elevator can carry at most 10 people.
Specifically for time duration: 'at most (length of time).'
修理には最長で１週間かかります。
Repairs will take at most one week.
せいぜい is more colloquial and often carries a dismissive tone, while 多くても is neutral and simply states an upper limit. Use せいぜい in casual speech and 多くても in formal writing.
せいぜい５分しか待てない。
I can wait at most 5 minutes (and that's not much).
多くても５分しか待てません。
I can wait at most 5 minutes (neutral statement).
Do not directly translate 'at the most' as 最も (もっとも), which means 'most' in the sense of 'extremely' or 'the most.' That would be incorrect.
Don't get angry over at most 100 yen.