01
Enter the number
Type a regular number like 2026 or a Roman numeral like MMXXVI.
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 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 calculate to get the result with a value breakdown.
02
Calculate
The tool detects the input type automatically and converts it to the other format.
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Review the result
The result appears instantly with a table explaining the values used.
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Use the breakdown
Use the value table to understand how the Roman numeral is built.
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