70 in Japanese
七十
Updated June 2026
70 in Japanese is 七十, written ななじゅう in hiragana and read nana-jū. Seventy: nana-ju in everyday counting
NUMERAL
70
KANJI
七十
HIRAGANA
ななじゅう
ROMAJI
nana-jū
Build-by-place breakdown
Counter-attached forms
How 70 attaches to common counters. Each links to the per-counter deep-dive.
Cultural context
The age 70 has a traditional Japanese name: koki (古希, “antiquity-rare 70”), from a poem by the Tang-dynasty Chinese poet Du Fu suggesting that living to 70 was rare. Modern Japan celebrates koki-no-iwai (古希の祝い) at age 70.
Real sentence examples
七十歳のお誕生日おめでとうございます (nana-jus-sai no o-tanjoubi omedetou gozaimasu): happy 70th birthday.
七十パーセント以上が賛成しました (nana-jup-paasento ijou ga sansei shimashita): more than 70 percent agreed.
Pronunciation and morphology notes
Seventy uses nana in standard counting. The form shichi-ju exists but is non-standard outside fixed compounds. Nana is unambiguous; shichi can be misheard. The age 70 in everyday Japanese is nana-jus-sai. The traditional cultural name koki is reserved for the celebration, not the ordinary age statement.
Frequently asked questions
How do you write 70 in Japanese?
70 is written 七十 in kanji and ななじゅう in hiragana. In romaji (modified Hepburn) it is nana-jū.
What is 70 in hiragana?
70 in hiragana is ななじゅう. Hiragana spells out the reading nana-jū phonetically; the kanji form is 七十.
Related numbers
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