| 1 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 1 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 1 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 4 | A New Dictionary of Kanji Usage |
| 1 | Classic Nelson (Andrew Nelson) |
| 1 | Essential Kanji (P.G. O’Neill) |
| 1 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 3 | Japanese Names (P.G. O’Neill) |
| 1.A | Japanese for Busy People |
| 2 | Kanji and Kana (Spahn and Hadamitzky) |
| 2 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1 | Kanji in Context (Nishiguchi and Kono) |
| 1 | Kodansha Compact Kanji Guide |
| 4148 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2105 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2850 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1 | Les Kanjis dans la tete (Yves Maniette) |
| 1 | Morohashi |
| 3341 | New Japanese English Character Dictionary (Jack Halpern) |
| 1 | New Nelson (John Haig) |
| 1 | Remembering The Kanji (James Heisig) |
| 1 | Remembering The Kanji, 6th edition (James Heisig) |
| 1 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 1 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 1
JLPT level N5
2 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 一 【イチ】 one, 1, best, first, foremost, beginning, start, a (single), one (of many), ace, bottom string (on a shamisen, etc.)
- 一位 【イチイ】 first place, first rank, units position (of a number)
- 十一 【ジュウイチ】 eleven, 11, jack
- １対１ 【イチタイイチ】 one-to-one, one-on-one
- 一 【イツ】 one, same (mind, path, etc.)
- 一に 【イツニ】 solely, entirely, only, or
- 均一 【キンイツ】 uniformity, equality
- 画一 【カクイツ】 uniformity, standardization, standardisation
Kun reading compounds
- 一つ 【ひとつ】 one, for one thing, only, (not) even, just (e.g. "just try it"), some kind of, one type of
- 一つ一つ 【ひとつひとつ】 one-by-one, separately, in detail
Readings
- Japanese names:
- かず、 い、 いっ、 いる、 かつ、 かづ、 てん、 はじめ、 ひ、 ひとつ、 まこと
- Korean:
- il
Spanish
- uno
- 1
Portuguese
- um
French
- un
- radical un (no. 1)
| 3072 | 2001 Kanji |
| 0a1.1 | The Kanji Dictionary |
| 4-1-4 | SKIP code |
| 1000.0 | Four corner code |
| 1-16-76 | JIS X 0208-1997 kuten code |
| 4e00 | Unicode hex code |
Jōyō kanji, taught in grade 5
JLPT level N1
1218 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 酸 【サン】 acid, sourness, sour taste
- 酸化 【サンカ】 oxidation, oxidization
- 炭酸 【タンサン】 carbonic acid, carbonated water, carbonated drink, baking soda, sodium carbonate
- アミノ酸 【アミノサン】 amino acid
Kun reading compounds
- 酸い 【すい】 sour, acid
- 酸葉 【すいば】 sorrel (Rumex acetosa), Common sorrel, garden sorrel, spinach dock
Readings
- Korean:
- san
Spanish
- ácido
- agrio
Portuguese
- ácido
- amargo
- azedo
- picante
French
- acide
- aigre
- amer
- sur (goût)
| 618 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 715 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 689 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1027 | A New Dictionary of Kanji Usage |
| 4789 | Classic Nelson (Andrew Nelson) |
| 819 | Essential Kanji (P.G. O’Neill) |
| 1838 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 516 | Kanji and Kana (Spahn and Hadamitzky) |
| 525 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1420 | Kanji in Context (Nishiguchi and Kono) |
| 1797 | Kodansha Compact Kanji Guide |
| 1968 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1049 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1415 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1449 | Les Kanjis dans la tete (Yves Maniette) |
| 39871 | Morohashi |
| 1563 | New Japanese English Character Dictionary (Jack Halpern) |
| 6177 | New Nelson (John Haig) |
| 1437 | Remembering The Kanji (James Heisig) |
| 1545 | Remembering The Kanji, 6th edition (James Heisig) |
| 791 | Tuttle Kanji Cards (Alexander Kask) |
| 3267 | 2001 Kanji |
| 7e7.2 | The Kanji Dictionary |
| 1-7-7 | SKIP code |
| 1364.7 | Four corner code |
| 1-27-32 | JIS X 0208-1997 kuten code |
| 9178 | Unicode hex code |