Roman Numeral Converter
Two-way Roman numeral converter. Turn any number from 1 to 3999 into standard Roman numerals using the classic subtractive pairs, or decode a Roman numeral back to a number with strict validation that rejects malformed forms like IIII or IM. Includes the full pairs reference table.
TheCalculators — Roman Numeral Converter
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Roman Numeral
MMXXIV
2,024 in Roman numerals
- Number
- 2,024
- Roman Numeral
- MMXXIV
- Numeral Length
- 6 symbols
- Subtractive Pairs Used
- 1
Greedy subtraction walk
- 1Take 2 × M1,000 × 2 = 2,000 (MM)
- 2Take 2 × X10 × 2 = 20 (XX)
- 3Take 1 × IV4 × 1 = 4 (IV)
Standard subtractive pairs reference
Range 1–3999 follows the classical convention: no symbol repeats more than three times and V, L, D never repeat.
Most useful next
Formula
Greedy: repeatedly subtract the largest value from {1000, 900, …, 5, 4, 1} and append its symbol
Pro tips
- • Years and Super Bowls live here: 2024 → MMXXIV, 1999 → MCMXCIX.
- • Remember the order M, D, C, L, X, V, I — each is 10× or half of its neighbor.
FAQ
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