LingoDrop
Japanese · Pronunciation Guide
How do you pronounce "はい" in Japanese?
ha-i, two beats — deliberately not the English word "hi."
hai
Two morae with the accent on the first, giving a high-to-low shape across the word. The real work is refusing to collapse the two vowels into one, because English's automatic diphthong-forming machinery is very hard to switch off when two vowels sit side by side.
Listen: はい
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Sound it out
Hear it in a sentence
はい、分かりました。
Hai, wakarimashita.
Yes, I understand.
Listen: はい、分かりました。
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はい、分かりました pairs the affirmative with a four-mora verb, 分かりました — wa-ka-ri-ma-shi-ta, actually six, with a flapped r in the middle and a shi-ta ending where the i tends to devoice. Saying the full sentence slowly, you should hear はい as two beats and then six more, all the same length.
Where English speakers slip
Since it looks exactly like the English greeting, learners say "hi" — one syllable, one beat, a full English diphthong. That's half the correct length and the wrong vowel shape. Separate the a and the i, keep both short, and soften the h. A native はい has an audible two-part structure that the English word simply doesn't.