Roman Numeral Converter
Convert numbers to Roman numerals or Roman numerals to numbers with a detailed breakdown.
Roman numerals are based on seven basic symbols: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). These symbols are combined to form numbers using addition and subtraction rules.
Magmatum Historical Computing • Numeric Archive • 2026
How to use
How to use the Roman Numeral Converter
Enter a regular number or a Roman numeral, then choose the conversion direction to get the result instantly.
01
Enter the number
Type a regular number like 2026 or a Roman numeral like MMXXVI.
02
Choose conversion direction
Select whether to convert from decimal to Roman or Roman to decimal.
03
Review the result
The converted result will appear instantly with a simple value explanation.
04
Copy output
Copy the converted number and use it for study, writing, or design.
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