---
title: "501 in Roman numerals is DI"
description: "501 in Roman numerals is DI, written as 500 + 1. How it breaks down, how to write it, and the numbers either side."
url: https://atoneplace.net/roman-numerals/501/
site: "At One Place"
---

# 501 in Roman numerals

**501 in Roman numerals: DI**

501 is written DI in Roman numerals. That is 2 symbol groups added together, reading left to right from the largest value down.

## How it breaks down

*DI = 500 + 1 = 501*

| Group | Value | Subtraction | Running total |
| --- | --- | --- | --- |
| D | 500 | — | 500 |
| I | 1 | — | 501 |

## No subtraction needed

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

## The same number, other ways

- **In words:** Five hundred one
- **Roman numeral:** DI
- **Symbol count:** 2 characters
- **Binary:** 111110101
- **Hexadecimal:** 1F5

## The numbers either side

| Number | Roman numeral |
| --- | --- |
| 499 | CDXCIX |
| 500 | D |
| 501 | DI ← |
| 502 | DII |
| 503 | DIII |

## Common questions

### What is 501 in Roman numerals?

501 is DI.

### What does DI mean?

DI is the Roman numeral for 501 — 500 + 1.

### How do you write 501 in Roman numerals?

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

## Related pages

- [499 in Roman numerals](https://atoneplace.net/roman-numerals/499/)
- [500 in Roman numerals](https://atoneplace.net/roman-numerals/500/)
- [502 in Roman numerals](https://atoneplace.net/roman-numerals/502/)
- [503 in Roman numerals](https://atoneplace.net/roman-numerals/503/)
- [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/)