Decimal to Roman
Convert a number from 1 to 3999 into Roman numerals. Local, free, no signup.
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Convert a number from 1 to 3999 into Roman numerals. Local, free, no signup.
How to use Decimal to Roman
- Paste or type your contentThe result appears as you type — there is no submit button.
- Read and copy the resultThe output updates live and the copy button takes it in one click.
Worked example
- 1984
- MCMLXXXIV
Decimal to Roman reference table
| Input | Result |
|---|---|
| 1 | I |
| 2 | II |
| 5 | V |
| 10 | X |
| 20 | XX |
| 50 | L |
| 100 | C |
| 1000 | M |
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
Decimal to Roman only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- What is the supported range?
- 1 to 3999, the largest value expressible in classic Roman numerals.
- Why that limit?
- Traditional Roman notation has no standard symbol above M (1000).