300 in Japanese
三百
Updated June 2026
300 in Japanese is 三百, written さんびゃく in hiragana and read san-byaku. Where rendaku starts (300 ≠ san-hyaku)
NUMERAL
300
KANJI
三百
HIRAGANA
さんびゃく
ROMAJI
san-byaku
Build-by-place breakdown
Counter-attached forms
How 300 attaches to common counters. Each links to the per-counter deep-dive.
Real sentence examples
三百年前の建物です (san-byaku-nen mae no tatemono desu): it’s a building from 300 years ago.
お会計は三百円です (o-kaikei wa san-byaku-en desu): the bill is 300 yen.
Pronunciation and morphology notes
Three hundred is san-byaku, not san-hyaku. This is rendaku, sequential voicing: the /h/ in hyaku voices to /b/ after san. The same rendaku pattern appears at san-bon (300 long objects, also written san-bon), san-biki (3 small animals), and san-zen (3000). Other hundreds-positions are: hyaku (100), ni-hyaku (200), san-byaku (300), yon-hyaku (400), go-hyaku (500), rop-pyaku (600, with gemination), nana-hyaku (700), hap-pyaku (800, with gemination), kyu-hyaku (900). 600 and 800 use gemination, not rendaku.
Frequently asked questions
How do you write 300 in Japanese?
300 is written 三百 in kanji and さんびゃく in hiragana. In romaji (modified Hepburn) it is san-byaku.
What is 300 in hiragana?
300 in hiragana is さんびゃく. Hiragana spells out the reading san-byaku phonetically; the kanji form is 三百.
Related numbers
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