1400
| Years |
|---|
| Millennium |
| 2nd millennium |
| Centuries |
| Decades |
| Years |
| 1400 by topic |
|---|
| Leaders |
|
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Art and literature |
| 1400 in poetry |
| Gregorian calendar | 1400 MCD |
| Ab urbe condita | 2153 |
| Armenian calendar | 849 ԹՎ ՊԽԹ |
| Assyrian calendar | 6150 |
| Balinese saka calendar | 1321–1322 |
| Bengali calendar | 806–807 |
| Berber calendar | 2350 |
| English Regnal year | 1 Hen. 4 – 2 Hen. 4 |
| Buddhist calendar | 1944 |
| Burmese calendar | 762 |
| Byzantine calendar | 6908–6909 |
| Chinese calendar | 己卯年 (Earth Rabbit) 4097 or 3890 — to — 庚辰年 (Metal Dragon) 4098 or 3891 |
| Coptic calendar | 1116–1117 |
| Discordian calendar | 2566 |
| Ethiopian calendar | 1392–1393 |
| Hebrew calendar | 5160–5161 |
| Hindu calendars | |
| - Vikram Samvat | 1456–1457 |
| - Shaka Samvat | 1321–1322 |
| - Kali Yuga | 4500–4501 |
| Holocene calendar | 11400 |
| Igbo calendar | 400–401 |
| Iranian calendar | 778–779 |
| Islamic calendar | 802–803 |
| Japanese calendar | Ōei 7 (応永７年) |
| Javanese calendar | 1314–1315 |
| Julian calendar | 1400 MCD |
| Korean calendar | 3733 |
| Minguo calendar | 512 before ROC 民前512年 |
| Nanakshahi calendar | −68 |
| Thai solar calendar | 1942–1943 |
| Tibetan calendar | 阴土兔年 (female Earth-Rabbit) 1526 or 1145 or 373 — to — 阳金龙年 (male Iron-Dragon) 1527 or 1146 or 374 |
Year 1400 (MCD) was a leap year starting on Thursday of the Julian calendar. The year 1400 was not a leap year in the Proleptic Gregorian calendar, it was a common year starting on Wednesday.