Numbers to Roman Numerals

Enter a number and convert it to Roman numerals. Results appear instantly in your browser.

Number
Range: 1 – 3999
Roman Numeral
Result will appear here
Quick Reference
1→I
5→V
10→X
50→L
100→C
500→D
1000→M
4→IV
9→IX
40→XL
90→XC
400→CD
900→CM

Numbers to Roman Numerals Converter

This tool converts standard numbers (integers) into their Roman numeral equivalents. It supports numbers from 1 to 3999, which is the standard range for Roman numerals.

The conversion runs entirely in your browser. Enter any integer between 1 and 3999 to see its Roman numeral representation.

How to use

  1. Type or paste a number into the input field (e.g. 1999 or 2026).
  2. Click Convert to see the Roman numeral result.
  3. Use Copy to copy the Roman numeral to your clipboard.
  4. Click Clear to reset.

How it works

The tool breaks the number into its place values (thousands, hundreds, tens, ones) and maps each to the appropriate Roman numeral symbols. It uses the subtractive notation for 4s and 9s (e.g., IV for 4, IX for 9, XL for 40, XC for 90, CD for 400, CM for 900).

Valid range

Roman numerals traditionally represent numbers from 1 to 3999. Numbers outside this range are not supported because the standard Roman numeral system does not have a widely accepted notation for values of 4000 and above (some extensions use overlines or parentheses, but these are non-standard).

Example

Number: 14
Roman: XIV

Number: 1999
Roman: MCMXCIX

Number: 2026
Roman: MMXXVI

Number: 3999
Roman: MMMCMXCIX