How do you say “I will be late” in Japanese?

How do you say “I will be late” in Japanese?

遅（おそ）くなります。”Osoku nari-masu.” : It will be slower

If I were you, I’ll add 済（す）みません “Sumimasen” or ごめんなさい “Gomen’nasai” (both mean Sorry) before or after the phrase above. Because Japanese people are usually very punctual.

If you want to tell how long you’d be late, you can add numbers like follows:

5 minutes: 5分（ごふん）遅（おそ）くなります。”Gofun, osoku nari-masu.”

10 minutes: 10分（じゅっぷん）遅（おそ）くなります。”Juppun, osoku nari-masu.”

15 minutes: 15分（じゅうご・ふん）遅（おそ）くなります。”Juhgo-fun, osoku nari-masu.”

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