| Millennium: | 1st Millennium |
|---|---|
| Centuries: | 2nd cent. – 3rd cent. – 4th cent. |
| Decades: | 240s 250s 260s – 270s – 280s 290s 300s |
| Years: | 267 268 269 – 270 – 271 272 273 |
| Gregorian calendar | 270 CCLXX |
| Ab urbe condita | 1023 |
| Assyrian calendar | 5020 |
| Bengali calendar | −323 |
| Berber calendar | 1220 |
| Buddhist calendar | 814 |
| Burmese calendar | −368 |
| Byzantine calendar | 5778–5779 |
| Chinese calendar | 己丑年 (Earth Ox) 2966 or 2906 — to — 庚寅年 (Metal Tiger) 2967 or 2907 |
| Coptic calendar | −14 – −13 |
| Discordian calendar | 1436 |
| Ethiopian calendar | 262–263 |
| Hebrew calendar | 4030–4031 |
| Hindu calendars | |
| - Vikram Samvat | 326–327 |
| - Shaka Samvat | 191–192 |
| - Kali Yuga | 3370–3371 |
| Holocene calendar | 10270 |
| Iranian calendar | 352 BP – 351 BP |
| Islamic calendar | 363 BH – 362 BH |
| Javanese calendar | 149–150 |
| Julian calendar | 270 CCLXX |
| Korean calendar | 2603 |
| Minguo calendar | 1642 before ROC 民前1642年 |
| Nanakshahi calendar | −1198 |
| Seleucid era | 581/582 AG |
| Thai solar calendar | 812–813 |
The year 270 BC