21st Century in Roman Numerals
21st century
XXI
twenty-first
2001 (MMI) – 2100 (MMC)
How it's written in English
English writes the ordinal in figures, 21st century, or in words, the twenty-first century. The Roman form XXI is what Spanish, French and Italian use: siglo XXI, XXIᵉ siècle, XXI secolo. Source: en.wikipedia.org
In other languages
| Language | How it's written | Source |
|---|---|---|
| English | 21st century | — |
| Spanish | siglo XXI | rae.es |
| Portuguese | século XXI | pt.wikipedia.org |
| German | 21. Jahrhundert | duden.de |
| French | XXIe siècle | vitrinelinguistique.oqlf.gouv.qc.ca |
| Italian | XXI secolo | it.wikipedia.org |
| Indonesian | abad ke-21 | lmsspada.kemdikbud.go.id |
| Polish | XXI wiek | zpe.gov.pl |
| Dutch | 21e eeuw | onzetaal.nl |
| Turkish | 21. yüzyıl | tdk.gov.tr |
| Romanian | secolul al XXI-lea | dexonline.ro |
| Japanese | 21世紀 | ja.wikipedia.org |
When does the 21st century start and end?
With no year zero, the 1st century ran from 1 to 100, so the 21st runs from 2001 to 2100. In everyday use, people also call 2000–2099 the 21st century. Source: en.wikipedia.org
Which century is a year?
2026 is in century XXI Open
Decades of the 21st century
Olympic Games in the 21st century
The Games of the XXVIII Olympiad were held in Athens, Greece.
First of the century · 2004Source: wiki.krisyotam.com
The Games of the XXXIII Olympiad were held in Paris, France.
Last of the century · 2024Source: wiki.krisyotam.com
Other centuries
Common questions
What years are in the 21st century?
2001 to 2100 (MMI to MMC).
Is 2100 in the 21st or the 22nd century?
In the 21st: it is the last year of century XXI. The 22nd century starts in 2101 (MMCI).
What number is century XXI?
21: XXI is the 21st century.