Roman Numerals Converter
What is Roman Numerals Converter?
Roman Numerals Converter translates between ordinary numbers and Roman numerals. Enter any number from 1 to 3999 to get its Roman numeral, for example 2026 becomes MMXXVI, or paste a Roman numeral to see its number value with automatic validation. It is handy for clocks, book chapters, movie titles and tattoos.
How to use
- Choose the direction: Numbers to Roman or Roman to Numbers.
- Type a number from 1 to 3999, or paste a Roman numeral.
- The result appears instantly below the input.
- Use the Copy button to copy the result.
Features
- Converts numbers 1 to 3999 into correct Roman numerals.
- Converts Roman numerals back to numbers.
- Validates Roman numerals and explains invalid input.
- Accepts both upper case and lower case input.
- Shows instant results as you type.
- Free, private, and no signup required.
Frequently asked questions
How do I convert a number to a Roman numeral?
Pick Numbers to Roman, type any number from 1 to 3999, and the Roman numeral appears instantly below the input.
What is 2026 in Roman numerals?
2026 in Roman numerals is MMXXVI. Type it into the tool above to check any other year.
How do I convert Roman numerals back to numbers?
Switch to Roman to Numbers mode and paste the numeral. The tool validates it and shows the number value.
Why does it say my Roman numeral is invalid?
Roman numerals follow strict ordering rules. For example, IL is not valid for 49; the correct form is XLIX. The tool checks the full pattern and flags mistakes.
Why does the tool only cover 1 to 3999?
Classic Roman numerals have no standard form for zero or for numbers above 3999, so the tool covers the standard usable range.
Is this tool free?
Yes, it is free with no signup and no limits.