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

# 100 in Roman numerals

**100 in Roman numerals: C**

100 is written C in Roman numerals. That is 1 symbol group added together, reading left to right from the largest value down.

## How it breaks down

*C = 100 = 100*

| Group | Value | Subtraction | Running total |
| --- | --- | --- | --- |
| C | 100 | — | 100 |

## No subtraction needed

C 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 | no |
| L | 50 | no |
| C | 100 | yes — 1× |
| D | 500 | no |
| M | 1,000 | no |

## The same number, other ways

- **In words:** One hundred
- **Roman numeral:** C
- **Symbol count:** 1 characters
- **Binary:** 1100100
- **Hexadecimal:** 64

## The numbers either side

| Number | Roman numeral |
| --- | --- |
| 98 | XCVIII |
| 99 | XCIX |
| 100 | C ← |
| 101 | CI |
| 102 | CII |

## Common questions

### What is 100 in Roman numerals?

100 is C.

### What does C mean?

C is the Roman numeral for 100 — 100.

### How do you write 100 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: C (100). That gives C.

## Related pages

- [98 in Roman numerals](https://atoneplace.net/roman-numerals/98/)
- [99 in Roman numerals](https://atoneplace.net/roman-numerals/99/)
- [101 in Roman numerals](https://atoneplace.net/roman-numerals/101/)
- [102 in Roman numerals](https://atoneplace.net/roman-numerals/102/)
- [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/)