Roman Numeral Converter

Convert between roman numerals and numbers

Result

MMXXVI

2,026 in Roman numerals.

Quick reference

I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000

A smaller numeral before a larger one subtracts: IV = 4, IX = 9, XL = 40, CM = 900.

Everything is calculated instantly in your browser. Nothing is sent or stored anywhere.

About this tool

MMXXVI looks impressive until you need to know what year it is. Convert Roman numerals to numbers and back instantly.

The converter validates as you type, explaining broken numeral rules instead of silently guessing. A must for students, writers and the curiously minded.

How to use the roman numeral converter

  1. 1Type a number or a Roman numeral.
  2. 2Conversion happens both ways live.
  3. 3Invalid numerals get a clear explanation.

Frequently asked questions

1 to 3999, the standard range of classical Roman numerals.

More free tools you might find useful.

Part of Math Tools on JoliTools, free tools, no sign-up.