# Roman Numeral Converter

> Convert integers to Roman numerals (1–3999) and decode Roman numerals back to integers.

URL: https://uttir.com/roman-numeral-converter
Categories: converters
Privacy: Conversion runs in your browser.

## About

Roman numerals use seven symbols (I, V, X, L, C, D, M) to represent numbers from 1 to 3,999. They were used throughout the Roman Empire and remain common in clock faces, monarchs (Henry VIII), movie sequels (Rocky II), and Super Bowl branding.

Enter a number to get its Roman form, or paste a Roman numeral to decode it back to an integer. Bidirectional conversion with input validation — invalid Roman forms are rejected with a clear error.

## How to use

1. **Type a number** — Any integer from 1 to 3,999.
2. **Or type a Roman numeral** — Lowercase works too — it is normalized to uppercase.
3. **Read the result** — The other side updates live as you type.

## Examples

### 1994 in Roman numerals

A classic year used in many textbooks.

Output:

```
MCMXCIV
```

### Decode MCMLXXXIV

1984 in canonical Roman form.

Output:

```
1984
```

## FAQ

### Why is the range 1 to 3,999?

Classical Roman numerals had no standard form for numbers above 3,999. Appian and medieval scribes used overscores to multiply values by 1,000, but that notation is not part of the everyday Roman numerals you see in clocks and titles.

### What about lowercase Roman numerals?

They are accepted. The converter normalizes input to uppercase before parsing.

### What is the largest Roman numeral?

Standard Roman numerals go up to 3,999 (MMMCMXCIX). Beyond that, the system breaks down. The tool handles 1-3,999 cleanly; values above 3,999 are returned as a string with an "out of standard range" note.

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For the full HTML page with the live tool, visit https://uttir.com/roman-numeral-converter.
This file is the markdown rendering at https://uttir.com/roman-numeral-converter.md. See https://uttir.com/llms.txt for a site-wide summary.