2021 in Roman Numerals
2021 in Roman numerals is MMXXI. It is built from three parts: 2000 + 20 + 1 = MM + XX + I. Read it from left to right and add the values to get 2021. Below, 2021 appears in a date, on a copyright line and as a two-digit year.
2021 in Roman numerals is MMXXI.
2021 in Roman numerals: the breakdown
| Place value | Numeral | Value |
|---|---|---|
| 2000 | MM | 2000 |
| 20 | XX | 20 |
| 1 | I | 1 |
| Total | MMXXI | 2021 |
How to read MMXXI
- MM is 1000 + 1000, which is 2000.
- XX is 10 + 10, which is 20.
- I is 1.
- Add 2000 + 20 + 1 to get 2021.
Roman numeral 2021 in a date
| Order | 1 January 2021 | 31 December 2021 |
|---|---|---|
| MM.DD.YYYY | I.I.MMXXI | XII.XXXI.MMXXI |
| DD.MM.YYYY | I.I.MMXXI | XXXI.XII.MMXXI |
| YYYY.MM.DD | MMXXI.I.I | MMXXI.XII.XXXI |
For 1 January the first two orders match, because the day and the month are both I. For any other day, order or separator, use the Roman numeral date converter with 2021 filled in.
2021 on a copyright line
© MMXXI
Film and television end credits commonly show the copyright year in Roman numerals, so 2021 appears as © MMXXI.
2021 as a two-digit year
As a style choice, some people write only the last two digits of a year: ’21 gives XXI for 2021. The full year, MMXXI, is the standard form.
Facts about 2021
- 2021 is not a leap year: it is not divisible by 4.
- 2021 has 365 days.
- 1 January 2021 falls on a Friday.
- 2021 is in the 2020s.
- 2021 is in the 21st century.
Years around 2021
Convert another year
2021 = 2000 + 20 + 1 = MM + XX + I
What number is MMXXI?
MMXXI is the year 2021. Reading it from left to right, MM is 2000, XX is 20 and I is 1, which adds up to 2021.
Questions and answers
What is 2021 in Roman numerals?
2021 in Roman numerals is MMXXI. It is made of three parts: 2000 + 20 + 1 = MM + XX + I. Read MMXXI from left to right, add the parts, and you get 2021. Use the converter on this page to check any other number from 1 to 3,999.
How do you write 2021 in Roman numerals?
Split 2021 into its place values, write each one in Roman numerals, and join them from largest to smallest. For 2021 that is 2000 + 20 + 1, which is MM + XX + I, so the answer is MMXXI. Check that no letter repeats more than three times in a row.
What number is MMXXI?
MMXXI is 2021. Read it in place-value parts from left to right: MM is 2000, XX is 20, I is 1. Add the parts to get 2021. Letters after a larger or equal letter are added, and a smaller letter before a larger one is subtracted. You can also type MMXXI into the converter to read the number back.
How do you write 2021 on a date in Roman numerals?
Convert the month, the day and the year separately and join them with dots. For 1 January 2021 in US order that is I.I.MMXXI, and for 31 December 2021 it is XII.XXXI.MMXXI. The date converter lets you choose the order, the separator and a two-digit year.