Global Araç
Roman Numerals Converter
Quick reference
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Bidirectional Roman ↔ Arabic numeral conversion (1 to 3999). Validates input on both sides and round-trips so malformed forms like "IIII" or "VV" are rejected, not silently accepted. Useful for movie credits, book chapters, monarch ordinals, and Super Bowl numbers.
Nasıl Kullanılır
- Type a number into either field.
- The other field updates instantly.
- Invalid inputs (out of range, malformed) show an explanation.
Sık Sorulan Sorular
Why only 1–3999?
Classical Roman numerals don't have a standard form for zero or for 4000+. The system maxes at MMMCMXCIX (3999) without resorting to less-common overline notation. Years and chapters fall well within range.
Why is IIII rejected?
Standard subtractive form writes 4 as IV, 9 as IX, 40 as XL, etc. IIII shows up on clock faces but isn't standard Roman. The tool follows the strict form so converting back round-trips cleanly.