One of the sentences I found in an online paper and put into my Anki deck is


Why was the atomic bomb dropped on Nagasaki 77 years ago?

How is 77 read?

If I google ななじゅうなな, I get "About 1.730.000.000 results"

and Tae Kim says, "七十七 (ななじゅうなな)= 77"


However, a google search for しちじゅうしち produces "About results"

and there is a bank called

株式会社七十七銀行(しちじゅうしちぎんこう、英: The 77 Bank, Ltd.)


Can I just pick my favorite? Does it matter?

  • This is unrelated to your question but are you European? In most English-speaking areas, the comma and dot with numbers are reversed. 1.730 is a decimal (one point seven hundred and thirty), while 1,730 is a number in the thousands (one thousand seven hundred and thirty). I believe this is also true in Japan.
    – Angelos
    Nov 17, 2022 at 16:56
  • I am googling in Germany and just copied and pasted from the google result. You are quite right; I should have changed it to "1,730,000,000" instead.
    – Ned Reif
    Nov 17, 2022 at 17:42

1 Answer 1


Both are fine. See the Wikipedia/77:


Except ななそじあまりななつ, the other three could be used, but ななじゅうなな is the most common.

しち is more for specific combinations (7月, 7時, etc.) or sounds a little dated.

  • I did not think to look up "77" on wikipedia! :D Thank you for the idea!
    – Ned Reif
    Nov 18, 2022 at 16:45

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .