Translation guide
A formal or literary adverb meaning 'from this time forward.' In Japanese, it is expressed through set phrases, adverbs, or grammatical patterns, with the choice depending on formality and context.
To indicate that something will be true or will happen starting now and continuing into the future, in formal or written contexts.
The most common and neutral formal term for 'from now on' or 'in the future.' Used in announcements, business, and official contexts.
今後はこのようなことがないように注意します。
Henceforth, I will be careful to avoid such things.
Means 'after this' or 'from now on.' Often used in rules, notices, and formal statements. Slightly more legalistic than 今後.
以後、許可なく立ち入ることを禁じます。
Henceforth, entry without permission is prohibited.
Literally 'from this,' used in very formal announcements or ceremonies to mean 'from now on.' Often heard in public address systems.
これより、式典を開始いたします。
Henceforth, we will begin the ceremony.
Means 'on and after' a certain point. Can be used for 'henceforth' but often requires a specific starting point. More common in schedules and timelines.
来月以降、新しい規則が適用されます。
Henceforth (from next month), new rules will apply.
To express 'from now on' in everyday conversation or casual writing.
The standard casual and neutral way to say 'from now on' or 'from this point.' Used in daily speech.
これからはもっと早く起きるようにするよ。
Henceforth, I'll try to wake up earlier.
Literally 'from now,' emphasizing the immediate present. More immediate than これから.
今からは真面目に勉強します。
Henceforth, I will study seriously.
To mark a formal change in status, name, or rule, often found in proclamations, laws, or historical documents.
Used in very formal declarations to mean 'hereby' or 'henceforth.' Often paired with verbs like 宣言する (declare) or 定める (establish).
ここに、新政府の成立を宣言する。
Henceforth, we declare the establishment of a new government.
A formal pattern meaning 'with this' or 'as of now,' used to mark a transition. Often seen in ceremonies or official statements.
本日をもって、社名を変更いたします。
Henceforth (as of today), the company name will be changed.
English 'henceforth' is very formal. In casual Japanese, using 今後 or 以後 can sound stiff. Use これから or 今から instead.
これから気をつけるね。
I'll be careful from now on.
今後 is formal and often used in business or written contexts. これから is neutral and used in everyday conversation. Choose based on the situation.