| 283 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 374 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 353 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 327 | A New Dictionary of Kanji Usage |
| 4844 | Classic Nelson (Andrew Nelson) |
| 242 | Essential Kanji (P.G. O’Neill) |
| 976 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1948 | Japanese Names (P.G. O’Neill) |
| 2.1 | Japanese for Busy People |
| 312 | Kanji and Kana (Spahn and Hadamitzky) |
| 312 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 147 | Kanji in Context (Nishiguchi and Kono) |
| 1814 | Kodansha Compact Kanji Guide |
| 2147 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1126 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1527 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 854 | Les Kanjis dans la tete (Yves Maniette) |
| 40285 | Morohashi |
| 1711 | New Japanese English Character Dictionary (Jack Halpern) |
| 6253 | New Nelson (John Haig) |
| 846 | Remembering The Kanji (James Heisig) |
| 909 | Remembering The Kanji, 6th edition (James Heisig) |
| 449 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 422 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 3
JLPT level N2
672 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 鉄 【テツ】 iron (Fe), steel, iron (will, discipline, lady, etc.), railway, railway enthusiast
- 鉄製 【テッセイ】 made of iron
- 国鉄 【コクテツ】 national railway, Japan National Railways (1949-1987)
- 新日本製鐵 【シンニッポンセイテツ】 Nippon Steel Corporation
Kun reading compounds
- 黒金 【くろがね】 iron
Readings
- Japanese names:
- けん、 てっ
- Korean:
- cheol
Spanish
- hierro
- acero
Portuguese
- ferro
French
- fer
| 2863 | 2001 Kanji |
| 8a5.6 | The Kanji Dictionary |
| 1-8-5 | SKIP code |
| 8513.0 | Four corner code |
| 1-37-20 | JIS X 0208-1997 kuten code |
| 9244 | Unicode hex code |
Jōyō kanji, taught in grade 5
JLPT level N2
753 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 則 【ソク】 counter for rules, rule, regulation
- 即する 【ソクスル】 to conform to, to agree with, to be adapted to, to be based on
- 反則 【ハンソク】 foul, breaking the rules, violation (of the law, regulations, etc.), infringement, breach, infraction
- 正則 【セイソク】 correct, proper, formal, regular, systematic, normal, invertible (matrix), holomorphic
Kun reading compounds
- 則る 【のっとる】 to conform to, to be in accordance with, to follow (rule, tradition, example, etc.)
- 法 【のり】 rule, law, regulation, model, pattern, teachings of Buddha, Buddhist doctrine, transverse measurement, measurement across, side-slope, slope
- 即ち 【すなわち】 that is (to say), namely, i.e., precisely, exactly, just, nothing but, neither more nor less, (and) then
Readings
- Korean:
- jeug, chig, cheug
Spanish
- regla
- norma
- ley
- decisión
Portuguese
- regra
- seguir
- basear em
- ter como modelo
French
- règlement
- règle
- suivre
- norme
- loi (science, nature)
| 666 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 764 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 742 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 855 | A New Dictionary of Kanji Usage |
| 4487 | Classic Nelson (Andrew Nelson) |
| 499 | Essential Kanji (P.G. O’Neill) |
| 362 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 902 | Japanese Names (P.G. O’Neill) |
| 608 | Kanji and Kana (Spahn and Hadamitzky) |
| 618 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 808 | Kanji in Context (Nishiguchi and Kono) |
| 197 | Kodansha Compact Kanji Guide |
| 1831 | Kodansha Kanji Dictionary (Jack Halpern) |
| 967 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1311 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 89 | Les Kanjis dans la tete (Yves Maniette) |
| 1994 | Morohashi |
| 1444 | New Japanese English Character Dictionary (Jack Halpern) |
| 487 | New Nelson (John Haig) |
| 88 | Remembering The Kanji (James Heisig) |
| 92 | Remembering The Kanji, 6th edition (James Heisig) |
| 702 | Tuttle Kanji Cards (Alexander Kask) |
| 3943 | 2001 Kanji |
| 7b2.1 | The Kanji Dictionary |
| 1-7-2 | SKIP code |
| 6280.0 | Four corner code |
| 1-34-07 | JIS X 0208-1997 kuten code |
| 5247 | Unicode hex code |