Japanese symbol for “afr”

空燃比

くうねんひ

Romaji: kuunenhi

air-fuel ratio; AFR

In Japanese, afr is 空燃比, read くうねんひ (kuunenhi).

Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.

Meanings

n air-fuel ratio; AFR

Written forms: 空燃比. Readings: くうねんひ、くうねんぴ.

Kanji and stroke order

空

empty, sky, void

on: クウ
kun: そら、あ.く、あ.き、あ.ける

8 strokes · JLPT 4

燃

burn, blaze, glow

on: ネン
kun: も.える、も.やす、も.す

16 strokes · JLPT 2

比

compare, race, ratio

on: ヒ
kun: くら.べる

4 strokes · JLPT 2

Related words

Words that share a kanji.

Word	Reading	Meaning
空気	くうき kuuki	air; atmosphere
空港	くうこう kuukou	airport
空間	くうかん kuukan	space; room; airspace
航空	こうくう koukuu	aviation; flying
航空機	こうくうき koukuuki	aircraft
空中	くうちゅう kuuchuu	(in) the air; midair; sky
燃料	ねんりょう nenryou	fuel
燃焼	ねんしょう nenshou	burning; combustion
比較	ひかく hikaku	comparison

Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.