Roman Numeral Converter
Convert integers into conventional subtractive Roman numerals.
Your numbers
Roman numeral
Modern conventional notation for 1–3,999 only; historical variants and overbar notation are excluded.
Scenario comparison
Up to three snapshots in this tab. Loading one replaces the current inputs.
Formula
Greedy subtractive symbols: M, CM, D, CD, C, XC, L, XL, X, IX, V, IV, I
Convert integers into conventional subtractive Roman numerals.
Worked example
- Integer from 1 to 3,999
- 2026
- Roman numeral
- MMXXVI
Scope and limitations
Modern conventional notation for 1–3,999 only; historical variants and overbar notation are excluded.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 47377bbf3c0d · Example checked: