Convert numbers to Roman numerals and Roman numerals to numbers with this free Roman numeral converter.
Number to Roman:
Break the number into thousands, hundreds, tens, and ones, then match each place value to Roman numeral symbols.
Roman to Number:
Read symbols from left to right and add or subtract values based on Roman numeral rules.
Subtractive notation:
Smaller numerals before larger ones mean subtraction, like IV = 4.
Standard range:
Most Roman numeral converters use 1 to 3999.
Roman numerals are still used in clocks, book chapters, movie titles, outlines, monuments, and formal numbering systems.
Understanding Roman numerals makes it easier to read dates, section labels, and traditional numbering formats.
Your result shows the converted Roman numeral or standard number, along with supporting values and conversion steps.
This makes it easier to verify the result and understand how Roman numeral symbols combine.
IV equals 4 because I before V means subtract 1 from 5.
IX equals 9 because I before X means subtract 1 from 10.
Most standard converters go up to 3999, written as MMMCMXCIX.
No. Standard Roman numeral notation does not have a true zero symbol.