How do you write 2001 in Roman numerals?

2001 is written MMI in Roman numerals: MM (2,000) + I (1).

How do you write '01 in Roman numerals?

The last two digits of 2001 are written I.

Year · 21st century

2001 is written MMI

Type any other number or numeral below to convert it.

Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.

Roman numerals are written one decimal place at a time, largest first.

2,000 + 1 = 2,001

No subtraction is needed here: every letter is the same size or smaller than the one before it, so you simply add them up.

There's no letter for zero. The zeros are simply left out, which is why 2001 has 2 parts, not 4.

Shortened to two digits ('01), it's I. Many date tattoos use this shorter form.
MMI has 3 letters, one of the shortest years from 1900 to 2100. It suits small, neat placements.
2001 was not a leap year (365 days), and 1 January 2001 was a Monday.

MMI in ten open-source fonts, on your skin tone, ready to download or print as a stencil.

Within the 2000s, every year starts MM (2,000).