1800 (MDCCC) was an exceptional common year starting on Wednesday in the Gregorian calendar and a leap year starting on Sunday in the Julian calendar. It was the last year of the 18th century.

Millennium: 2nd millennium
Centuries: 17th century18th century19th century
Decades: 1770s  1780s  1790s  – 1800s –  1810s  1820s  1830s
Years: 1797 1798 179918001801 1802 1803
1800 in other calendars
Gregorian calendar1800
MDCCC
French Republican calendar8–9
Ab urbe condita2553
Armenian calendar1249
ԹՎ ՌՄԽԹ
Assyrian calendar6550
Balinese saka calendar1721–1722
Bengali calendar1207
Berber calendar2750
British Regnal year40 Geo. 3 – 41 Geo. 3
Buddhist calendar2344
Burmese calendar1162
Byzantine calendar7308–7309
Chinese calendar己未(Earth Goat)
4496 or 4436
    — to —
庚申年 (Metal Monkey)
4497 or 4437
Coptic calendar1516–1517
Discordian calendar2966
Ethiopian calendar1792–1793
Hebrew calendar5560–5561
Hindu calendars
 - Vikram Samvat1856–1857
 - Shaka Samvat1721–1722
 - Kali Yuga4900–4901
Holocene calendar11800
Igbo calendar800–801
Iranian calendar1178–1179
Islamic calendar1214–1215
Japanese calendarKansei 12
(寛政12年)
Javanese calendar1726–1727
Julian calendarGregorian minus 11 or 12 days
Korean calendar4133
Minguo calendar112 before ROC
民前112年
Nanakshahi calendar332
Thai solar calendar2342–2343
Tibetan calendar阴土羊年
(female Earth-Goat)
1926 or 1545 or 773
    — to —
阳金猴年
(male Iron-Monkey)
1927 or 1546 or 774

Events

change

Births

for more information, see Category:1800 births.

Deaths

for more information, see Category:1800 deaths.