1245
| Years | 
|---|
| Millennium | 
| 2nd millennium | 
| Centuries | 
| Decades | 
| Years | 
| 1245 by topic | 
|---|
| Leaders | 
| 
 | 
| Birth and death categories | 
| Births – Deaths | 
| Establishments and disestablishments categories | 
| Establishments – Disestablishments | 
| Art and literature | 
| 1245 in poetry | 
| Gregorian calendar | 1245 MCCXLV | 
| Ab urbe condita | 1998 | 
| Armenian calendar | 694 ԹՎ ՈՂԴ | 
| Assyrian calendar | 5995 | 
| Balinese saka calendar | 1166–1167 | 
| Bengali calendar | 651–652 | 
| Berber calendar | 2195 | 
| English Regnal year | 29 Hen. 3 – 30 Hen. 3 | 
| Buddhist calendar | 1789 | 
| Burmese calendar | 607 | 
| Byzantine calendar | 6753–6754 | 
| Chinese calendar | 甲辰年 (Wood Dragon) 3942 or 3735 — to — 乙巳年 (Wood Snake) 3943 or 3736 | 
| Coptic calendar | 961–962 | 
| Discordian calendar | 2411 | 
| Ethiopian calendar | 1237–1238 | 
| Hebrew calendar | 5005–5006 | 
| Hindu calendars | |
| - Vikram Samvat | 1301–1302 | 
| - Shaka Samvat | 1166–1167 | 
| - Kali Yuga | 4345–4346 | 
| Holocene calendar | 11245 | 
| Igbo calendar | 245–246 | 
| Iranian calendar | 623–624 | 
| Islamic calendar | 642–643 | 
| Japanese calendar | Kangen 3 (寛元3年) | 
| Javanese calendar | 1154–1155 | 
| Julian calendar | 1245 MCCXLV | 
| Korean calendar | 3578 | 
| Minguo calendar | 667 before ROC 民前667年 | 
| Nanakshahi calendar | −223 | 
| Thai solar calendar | 1787–1788 | 
| Tibetan calendar | 阳木龙年 (male Wood-Dragon) 1371 or 990 or 218 — to — 阴木蛇年 (female Wood-Snake) 1372 or 991 or 219 | 
Year 1245 (MCCXLV) was a common year starting on Sunday of the Julian calendar.