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Number to Roman Converter

Convert numbers to Roman numerals (and back). Supports bulk conversion.

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Enter a number between 1 and 3999

Show/Hide Reference Table

Roman	Value	Notes
M	1000	1000
CM	900	1000 − 100
D	500	500
CD	400	500 − 100
C	100	100
XC	90	100 − 10
L	50	50
XL	40	50 − 10
X	10	10
IX	9	10 − 1
V	5	5
IV	4	5 − 1
I	1	1

About Number to Roman Converter

Number to Roman Converter is a free online text utility that lets you convert numbers to roman numerals (and back). supports bulk conversion instantly in your browser. Writers, editors, students, and content creators use this tool daily to save time on repetitive text manipulation tasks. No data is sent to any server — everything is processed locally on your device.

How to Use

Paste your text Enter or paste the text you want to process into the input field. There's no length limit for most operations.

Choose your options Select any relevant options or modes to control how your text will be transformed.

Process the text Click the action button to transform your text. Results appear instantly in the output area.

Copy the result Click the Copy button to copy the transformed text to your clipboard, ready to paste anywhere.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use Number to Roman Converter?

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Save Hours of Manual Editing Number to Roman Converter automates tedious text tasks that would take minutes or hours to do by hand. Process thousands of lines in a single click.

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Complete Privacy Your text is processed entirely in your browser. Nothing is sent to any server, stored, or logged. Close the tab and your data is gone.

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Copy-Paste Friendly Designed for the real workflow: paste your text, transform it, copy the result. No account required, no file uploads, no unnecessary steps.

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Works with Any Language Full Unicode support means Number to Roman Converter handles English, Chinese, Arabic, emoji, and any other language or script correctly.

Frequently Asked Questions

Standard Roman numerals represent integers from 1 (I) to 3,999 (MMMCMXCIX). Numbers outside this range cannot be represented in standard form. Zero does not exist in the Roman numeral system.

When a smaller value appears before a larger one, it is subtracted. For example, IV = 5 − 1 = 4, IX = 10 − 1 = 9, XL = 50 − 10 = 40, XC = 100 − 10 = 90, CD = 500 − 100 = 400, CM = 1000 − 100 = 900. Only these 6 pairs are valid.

Switch to Bulk Convert mode and enter multiple numbers separated by commas, spaces, or newlines. Each number (1–3999) will be converted and listed with an arrow showing the result. You can copy all results or download them as a text file.