| 1251 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 1403 | A New Dictionary of Kanji Usage | 
| 1683 | Classic Nelson (Andrew Nelson) | 
| 1225 | Essential Kanji (P.G. O’Neill) | 
| 1292 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 809 | Japanese Names (P.G. O’Neill) | 
| 1275 | Kanji and Kana (Spahn and Hadamitzky) | 
| 1349 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 1785 | Kanji in Context (Nishiguchi and Kono) | 
| 813 | Kodansha Compact Kanji Guide | 
| 438 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 271 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 327 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 627 | Les Kanjis dans la tete (Yves Maniette) | 
| 10527 | Morohashi | 
| 367 | New Japanese English Character Dictionary (Jack Halpern) | 
| 1849 | New Nelson (John Haig) | 
| 620 | Remembering The Kanji (James Heisig) | 
| 667 | Remembering The Kanji, 6th edition (James Heisig) | 
| 1255 | Tuttle Kanji Cards (Alexander Kask) | 
      Jōyō kanji, taught in junior high
    
    
      JLPT level N1
    
    
      1314 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 恒常 【コウジョウ】 constancy, permanence
- 恒久 【コウキュウ】 permanence, perpetuity
Kun reading compounds
- 常 【つね】 usual state of things
Readings
- Japanese names:
- のぶ、 ひさ、 ひさし
- Korean:
- hang, geung
Spanish
- eterno
- siempre
Portuguese
- constância
- sempre
French
- constance
- toujours
| 1172 | 2001 Kanji | 
| 4k6.5 | The Kanji Dictionary | 
| 1-3-6 | SKIP code | 
| 1-1-8 | SKIP code | 
| 9101.6 | Four corner code | 
| 1-25-17 | JIS X 0208-1997 kuten code | 
| 6052 | Unicode hex code |