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Roman Numerals
For dates, tattoos, homework and clock faces: convert in either direction and see how the numeral is built.
Free, no sign-up. Runs in your browser: nothing is uploaded.
How to use Roman Numerals
- Type a number or a Roman numeral.
- Read the conversion.
- See the breakdown of symbols.
Features
- Two-way conversion
- Validation of numerals
- Breakdown of symbols
- Large numbers with overline notation
Private by design
Everything you type is calculated by your browser on this device. Nothing is sent to openWorkstand or anyone else, so the Roman Numerals is safe for private and work data, and it keeps working offline once the page has loaded. How local processing works
When to use the Roman Numerals
- Read years in movie credits.
- Write numbers for a tattoo or design.
- Check homework answers.
Frequently asked questions
Why is 4 written IV?
Roman numerals use subtractive notation: a smaller symbol before a larger one is subtracted, so IV = 5 − 1.
Keep working with the result
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