10 = X
10 in Roman numerals is X.
Ten written with the letters X.
10 in words: Ten
10 in Roman numerals is X, one of the seven core symbols. There is nothing to add or subtract here: the single letter X carries the value 10 by itself, which is why it is one of the few numerals worth learning by heart rather than working out.
Because X is a base symbol, it appears inside a huge number of larger numerals. Knowing it on sight makes reading dates, chapter numbers and clock faces much faster.
How 10 breaks down
Reading X from left to right, each group is added together to reach 10:
| Group | Value | Place |
|---|---|---|
| X | 10 | tens |
| X | 10 | total |
Frequently asked questions
What is 10 in Roman numerals?
10 in Roman numerals is X.
How do you write 10 in words?
10 is written "Ten" in English.
What number comes before X?
The number before X is 9, written IX in Roman numerals.
What number comes after X?
The number after X is 11, written XI in Roman numerals.
Related numbers
Last updated July 22, 2026. Reviewed for accuracy against the standard rules for Roman numerals.