100 or one hundred (Roman numeral: C)[1] is a common year of the Gregorian calendar. It started on a Friday. It was also a leap year starting on Wednesday of the Julian calendar.

Millennium: 1st millennium
Centuries: 1st century BC1st century2nd century
Decades: 70s  80s  90s  – 100s –  110s  120s  130s
Years: 97 98 99100101 102 103
AD 100 in other calendars
Gregorian calendarAD 100
Ab urbe condita853
Assyrian calendar4850
Balinese saka calendar21–22
Bengali calendar−493
Berber calendar1050
Buddhist calendar644
Burmese calendar−538
Byzantine calendar5608–5609
Chinese calendar己亥(Earth Pig)
2796 or 2736
    — to —
庚子年 (Metal Rat)
2797 or 2737
Coptic calendar−184 – −183
Discordian calendar1266
Ethiopian calendar92–93
Hebrew calendar3860–3861
Hindu calendars
 - Vikram Samvat156–157
 - Shaka Samvat21–22
 - Kali Yuga3200–3201
Holocene calendar10100
Iranian calendar522 BP – 521 BP
Islamic calendar538 BH – 537 BH
Javanese calendarN/A
Julian calendarAD 100
Korean calendar2433
Minguo calendar1812 before ROC
Nanakshahi calendar−1368
Seleucid era411/412 AG
Thai solar calendar642–643
Tibetan calendar阴土猪年
(female Earth-Pig)
226 or −155 or −927
    — to —
(male Iron-Rat)
227 or −154 or −926
Hundred rupee note India
Hundred rupee note India

It is one of only seven years to use just one Roman numeral. The seven are 1 AD (I), 5 AD (V), 10 AD (X), 50 AD (L), 100 AD (C), 500 AD (D), and 1000 AD (M).

Events change

Births change

Deaths change

References change

  1. Reïnforced by but not originally derived from Latin centum.