Convert numbers and Roman numerals
Roman numerals still appear on clocks, book chapters, film credits, and monuments, and working them out by hand means remembering the rules about when a smaller symbol subtracts. This converter translates an ordinary number into Roman numerals and reads a numeral back into a number, both ways, without the mental arithmetic.
How to use it
- Enter a number to get its Roman numeral, or a numeral to get the number.
- Read the converted result.
- Copy it for your document or design.
Where they show up
- Chapter and section numbering.
- Dates and copyright years in credits.
- Clock faces, monuments, and formal naming.
Questions people ask
Why no numeral for zero? The Roman system has no symbol for zero — it simply didn't include the concept, so conversion starts at one.
Is my input stored? No — conversion runs in your browser.