---
title: "679 in Roman numerals is DCLXXIX"
description: "679 in Roman numerals is DCLXXIX, written as 500 + 100 + 50 + 10 + 10 + 9. How it breaks down, how to write it, and the numbers either side."
url: https://atoneplace.net/roman-numerals/679/
site: "At One Place"
---

# 679 in Roman numerals

**679 in Roman numerals: DCLXXIX**

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

## How it breaks down

*DCLXXIX = 500 + 100 + 50 + 10 + 10 + 9 = 679*

| Group | Value | Subtraction | Running total |
| --- | --- | --- | --- |
| D | 500 | — | 500 |
| C | 100 | — | 600 |
| L | 50 | — | 650 |
| X | 10 | — | 660 |
| X | 10 | — | 670 |
| IX | 9 | X − I | 679 |

## Why the smaller symbol comes first

DCLXXIX uses subtractive notation in one place: IX means X minus I, or 9. A smaller symbol placed before a larger one is subtracted from it rather than added, which is why IX is nine and not eleven.

Only six such pairs are valid — IV, IX, XL, XC, CD and CM. That restriction is what makes the notation unambiguous: IIII and IC both look like they should work, but neither is standard, and only one spelling of any number is correct.

## The symbols

| Symbol | Value | Used here |
| --- | --- | --- |
| I | 1 | yes — 1× |
| V | 5 | no |
| X | 10 | yes — 3× |
| L | 50 | yes — 1× |
| C | 100 | yes — 1× |
| D | 500 | yes — 1× |
| M | 1,000 | no |

## The same number, other ways

- **In words:** Six hundred seventy-nine
- **Roman numeral:** DCLXXIX
- **Symbol count:** 7 characters
- **Binary:** 1010100111
- **Hexadecimal:** 2A7

## The numbers either side

| Number | Roman numeral |
| --- | --- |
| 677 | DCLXXVII |
| 678 | DCLXXVIII |
| 679 | DCLXXIX ← |
| 680 | DCLXXX |
| 681 | DCLXXXI |

## Common questions

### What is 679 in Roman numerals?

679 is DCLXXIX.

### What does DCLXXIX mean?

DCLXXIX is the Roman numeral for 679 — 500 + 100 + 50 + 10 + 10 + 9.

### How do you write 679 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: D (500), then C (100), then L (50), then X (10), then X (10), then IX (9). That gives DCLXXIX.

## Related pages

- [677 in Roman numerals](https://atoneplace.net/roman-numerals/677/)
- [678 in Roman numerals](https://atoneplace.net/roman-numerals/678/)
- [680 in Roman numerals](https://atoneplace.net/roman-numerals/680/)
- [681 in Roman numerals](https://atoneplace.net/roman-numerals/681/)
- [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/)