---
title: "518 in Roman numerals is DXVIII"
description: "518 in Roman numerals is DXVIII, written as 500 + 10 + 5 + 1 + 1 + 1. How it breaks down, how to write it, and the numbers either side."
url: https://atoneplace.net/roman-numerals/518/
site: "At One Place"
---

# 518 in Roman numerals

**518 in Roman numerals: DXVIII**

518 is written DXVIII in Roman numerals. That is 6 symbol groups added together, reading left to right from the largest value down.

## How it breaks down

*DXVIII = 500 + 10 + 5 + 1 + 1 + 1 = 518*

| Group | Value | Subtraction | Running total |
| --- | --- | --- | --- |
| D | 500 | — | 500 |
| X | 10 | — | 510 |
| V | 5 | — | 515 |
| I | 1 | — | 516 |
| I | 1 | — | 517 |
| I | 1 | — | 518 |

## No subtraction needed

DXVIII 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 | yes — 3× |
| V | 5 | yes — 1× |
| X | 10 | yes — 1× |
| L | 50 | no |
| C | 100 | no |
| D | 500 | yes — 1× |
| M | 1,000 | no |

## The same number, other ways

- **In words:** Five hundred eighteen
- **Roman numeral:** DXVIII
- **Symbol count:** 6 characters
- **Binary:** 1000000110
- **Hexadecimal:** 206

## The numbers either side

| Number | Roman numeral |
| --- | --- |
| 516 | DXVI |
| 517 | DXVII |
| 518 | DXVIII ← |
| 519 | DXIX |
| 520 | DXX |

## Common questions

### What is 518 in Roman numerals?

518 is DXVIII.

### What does DXVIII mean?

DXVIII is the Roman numeral for 518 — 500 + 10 + 5 + 1 + 1 + 1.

### How do you write 518 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: D (500), then X (10), then V (5), then I (1), then I (1), then I (1). That gives DXVIII.

## Related pages

- [516 in Roman numerals](https://atoneplace.net/roman-numerals/516/)
- [517 in Roman numerals](https://atoneplace.net/roman-numerals/517/)
- [519 in Roman numerals](https://atoneplace.net/roman-numerals/519/)
- [520 in Roman numerals](https://atoneplace.net/roman-numerals/520/)
- [4 in Roman numerals](https://atoneplace.net/roman-numerals/4/)
- [9 in Roman numerals](https://atoneplace.net/roman-numerals/9/)
- [14 in Roman numerals](https://atoneplace.net/roman-numerals/14/)
- [19 in Roman numerals](https://atoneplace.net/roman-numerals/19/)
- [40 in Roman numerals](https://atoneplace.net/roman-numerals/40/)
- [42 in Roman numerals](https://atoneplace.net/roman-numerals/42/)
- [49 in Roman numerals](https://atoneplace.net/roman-numerals/49/)
- [50 in Roman numerals](https://atoneplace.net/roman-numerals/50/)

## Sources

- Calculated on this page — At One Place (/about/)