20 in Roman numerals
20 in Roman numerals
XX
20 is written XX in Roman numerals. That is 2 symbol groups added together, reading left to right from the largest value down.
How it breaks down
| Group | Value | Subtraction | Running total |
|---|---|---|---|
| X | 10 | — | 10 |
| X | 10 | — | 20 |
No subtraction needed
XX is purely additive — every symbol is simply added to the one before it, with no subtractive pairs like IV or IX. Numbers avoid subtraction when none of their digits is a 4 or a 9.
The symbols
| Symbol | Value | Used here |
|---|---|---|
| I | 1 | no |
| V | 5 | no |
| X | 10 | yes — 2× |
| L | 50 | no |
| C | 100 | no |
| D | 500 | no |
| M | 1,000 | no |
The same number, other ways
- In words
- Twenty
- Roman numeral
- XX
- Symbol count
- 2 characters
- Binary
- 10100
- Hexadecimal
- 14
The numbers either side
| Number | Roman numeral |
|---|---|
| 18 | XVIII |
| 19 | XIX |
| 20 | XX ← |
| 21 | XXI |
| 22 | XXII |
Common questions
- What is 20 in Roman numerals?
- 20 is XX.
- What does XX mean?
- XX is the Roman numeral for 20 — 10 + 10.
- How do you write 20 in Roman numerals?
- Take the largest value that fits and repeat until nothing is left: X (10), then X (10). That gives XX.
Related pages
- 18 in Roman numerals XVIII
- 19 in Roman numerals XIX
- 21 in Roman numerals XXI
- 22 in Roman numerals XXII
- 4 in Roman numerals IV
- 9 in Roman numerals IX
- 14 in Roman numerals XIV
- 40 in Roman numerals XL
- 42 in Roman numerals XLII
- 49 in Roman numerals XLIX
- 50 in Roman numerals L
- 64 in Roman numerals LXIV
Sources
- Calculated on this page — At One Place