Meet the Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers instantly. Supports 1 to 3,999,999 with the standard rules explained.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
What is the Roman Numeral Converter?
Roman numerals still appear on clocks, book chapters, movie sequels, Super Bowls and monuments. Enter a number to get its Roman numeral, or type a numeral such as MCMXCIV to get the number.
The converter follows the standard subtractive rules (IV, IX, XL, XC, CD, CM) and validates input, so an invalid numeral like IIII or VX is flagged instead of guessed.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Numbers to numerals and numerals to numbers.
Rejects invalid numerals.
Up to 3,999,999 using overlines (vinculum).
Symbol table included.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This text tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
What is 2024 in Roman numerals?
MMXXIV.
Why isn't 4 written IIII?
The standard subtractive form is IV, although IIII appears on some clock faces.
Is there a Roman numeral for zero?
No. The Romans had no symbol for zero.
What is the largest Roman numeral?
Classically 3,999 (MMMCMXCIX). Overlines multiply a symbol by 1,000 for larger values.
What is 2026 in Roman numerals?
MMXXVI.
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