Roman Numeral Converter – Numbers to Roman Numerals & Back
Convert numbers, years and dates into Roman numerals – and Roman numerals back into numbers. Includes the dedicated Unicode numerals Ⅰ–Ⅻ for clock faces and titles.
🔄 7 Styles – click Copy on any result
Roman numerals
Roman numerals: 2026
Lowercase roman
Lowercase roman: 2026
Unicode numerals (Ⅰ–Ⅻ)
Unicode numerals (Ⅰ–Ⅻ): 2026
Unicode lowercase (ⅰ–ⅻ)
Unicode lowercase (ⅰ–ⅻ): 2026
Dotted
Dotted: 2026
Roman → number
Roman → number: 2026
Roman, bold serif
Roman, bold serif: 2026
Styled letters are Unicode characters, not fonts – screen readers may read them letter by letter and search engines don't match them to plain words, so keep essential details in plain text. Learn more
Roman numerals write numbers with seven letters – I 1, V 5, X 10, L 50, C 100, D 500, M 1000 – added from left to right, with a smaller letter before a larger one meaning subtraction (IV is 4, XC is 90). The system is still used for years on buildings and film credits, monarchs and popes, Super Bowls, clock faces, book chapters, outline numbering and tattoos of birth dates.
Type any number up to 3,999 and it is converted in place, so “Born 1998” becomes “Born MCMXCVIII” and a date like “17 9 2026” becomes “XVII IX MMXXVI”. Paste Roman numerals into the box and the last row converts them back. Unicode also has single characters for Ⅰ through Ⅻ (U+2160–U+216B) which keep a numeral together as one glyph – handy for tables and clock designs.
How to Use This Generator
- 1
Type a number, year or date – or paste Roman numerals to decode.
- 2
Copy the standard row for most uses; use the Unicode row when the numeral must stay as one character.
- 3
Check the “Roman → number” row to verify a numeral you found elsewhere.
Reading and Writing Roman Numerals
The subtractive pairs are the only tricky part. A letter is subtracted only when it is one of I, X or C placed directly before the next two larger letters.
- IV 4 · IX 9 · XL 40 · XC 90 · CD 400 · CM 900
- 1 I · 5 V · 10 X · 50 L · 100 C · 500 D · 1000 M
- 2024 MMXXIV · 2025 MMXXV · 2026 MMXXVI · 1999 MCMXCIX
- Never four of the same letter in a row: 4 is IV, not IIII (except on some clock faces)
Dates in Roman Numerals
A birth date or wedding date is usually written as three numerals separated by dots, dashes or spaces – 17·IX·MMXXVI – or stacked vertically for a tattoo. Enter the date as separate numbers (day month year) and each part is converted; the Dotted row places a dot between letters for a spaced tattoo layout. Always double-check the year with the reverse converter before it becomes permanent.
Unicode Roman Numeral Characters
Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ Ⅺ Ⅻ (and lowercase ⅰ–ⅻ) are single characters intended for compatibility with East Asian typesetting. They look like ordinary letters but cannot be broken across lines and are read by screen readers as “Roman numeral twelve”, which makes them a good choice for clock faces, chapter labels and anywhere a numeral is a unit. For numbers above 12 the tool falls back to letters.
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Frequently Asked Questions
What is the largest number it converts?
3,999 (MMMCMXCIX) – the standard notation has no symbol for 5,000 without overlines.
How do I write a date like 04/07/1995?
Type “4 7 1995” and copy “IV VII MCMXCV”; use the Dotted row for spaced letters.
Is IIII ever correct?
Only on clock faces, where IIII is traditional for visual balance. Everywhere else 4 is IV.
Can it convert Roman numerals to numbers?
Yes – paste them and read the “Roman → number” row.
Is the converter free?
Yes.
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