How do I type the Ⅳ roman numeral four symbol?

On Windows, type 2163 and press Alt+X. On Linux press Ctrl+Shift+U then 2163. On any system the quickest route is the copy button on this page.

What is the code for Ⅳ?

Roman Numeral Four is U+2163. In UTF-8 it takes 3 bytes. The table above lists every escape format.

Will Ⅳ survive being pasted anywhere?

Not always. Roman Numeral Four is a compatibility character: any system that applies Unicode NFKC normalisation — search indexes, usernames, identifiers — replaces it with IV. Use it for display, not where text is normalised.

U+2163 · Letter number

Roman Numeral Four Symbol Ⅳ

Ⅳ is roman numeral four, and Unicode gives it the numeric value 4. It was added in Unicode 1.1, and Unicode files it under Letter number.

Codes & technical data

Unicode	`U+2163`
HTML hex	`Ⅳ`
HTML decimal	`Ⅳ`
CSS	`\2163`
JavaScript	`\u{2163}`
Python	`\U00002163`
Java / C#	`\u2163`
Rust	`\u{2163}`
Swift	`\u{2163}`
PHP	`\u{2163}`
URL encoded	`%E2%85%A3`
UTF-8 bytes	`E2 85 A3`
UTF-16 bytes	`2163`
Base64	`4oWj`
Decimal	`8547`
Decomposes to	IV (compat form)
Numeric value	4
Category	Letter number (Nl)
Introduced	Unicode 1.1

Will Ⅳ survive being pasted?

Normalisation. No. Anything that applies NFKC — search indexes, usernames, domain names, programming identifiers — rewrites Ⅳ as IV. Safe for display, not for storage.
Legacy encodings. Ⅳ is Unicode-only — it has no Latin-1 equivalent, so a system stuck on an 8-bit encoding cannot represent it.
Size. 3 bytes in UTF-8. Character-limited fields — SMS, bios, some form validators — usually count bytes, not characters.

Other four characters

Unicode names 9 characters ending in “four”. They differ by direction, weight or decoration rather than by meaning.

Nearby in Number Forms

Roman numerals as single characters, and the vulgar fractions beyond the three Latin-1 supplies. A Roman numeral here is one character, not a run of letters, so Ⅷ and VIII sort and search differently.

All 58 characters in Number Forms →

How to type Ⅳ

Windows	Type `2163` then press `Alt`+`X`
macOS	Press `Ctrl`+`Cmd`+`Space`, then search for “roman numeral four”
Linux	Press `Ctrl`+`Shift`+`U`, type `2163`, press `Enter`
HTML	`Ⅳ`

About Unicode’s Letter number category

This is a letter number: a character that looks like a letter but carries a numeric value, the way Roman numerals do.

Frequently asked questions

How do I type the Ⅳ roman numeral four symbol?: On Windows, type 2163 and press Alt+X. On Linux press Ctrl+Shift+U then 2163. On any system the quickest route is the copy button on this page.
What is the code for Ⅳ?: Roman Numeral Four is U+2163. In UTF-8 it takes 3 bytes. The table above lists every escape format.
Will Ⅳ survive being pasted anywhere?: Not always. Roman Numeral Four is a compatibility character: any system that applies Unicode NFKC normalisation — search indexes, usernames, identifiers — replaces it with IV. Use it for display, not where text is normalised.