IV Roman Numeral: What Number Is IV?
Numbers and numerals are detected as you type. Enter copies, Alt+S swaps.
IV is 4 (four). I stands before a larger symbol and is subtracted; everything else is added: −1 + 5 = 4.
Reading IV letter by letter
| Letter | Value | Step | Total |
|---|---|---|---|
| I | 1 | subtract (V is larger) | −1 |
| V | 5 | add, closing IV | 4 |
Why IV is valid
- V appears once
- Never doubled, never before a larger letter.
- The pair IV
- An allowed pair, and the only place where the values rise.
Easy to confuse with IV
VI, the same letters swapped, is 6 (VI roman numeral).
IIII appears on clocks, but the standard form of 4 is IV. Wikipedia
| Typed | Problem | Reads as |
|---|---|---|
| IIV | Only one I can be subtracted from a larger letter. | IV (4) |
IV in names, titles and systems
- Super BowlSuper Bowl IVJanuary 11, 1970New OrleansKansas City Chiefs beat Minnesota Vikings 23–7Wikipedia
- ReignHenry IVthe first Bourbon king of France1589–1610Wikipedia
- TitleRocky IV1985Wikipedia
- OlympicsGames of the IV Olympiad1908LondonWikipedia
- EventLateran IV1215Wikipedia
- Clock facedial shows IIIIMost clock faces with Roman numerals show four o'clock as IIII rather than IV, a tradition going back to the 14th-century Wells Cathedral clockWikipedia
4 in Roman numerals · Roman numeral rules
Questions about IV
Does IV stand for 4 or 5?
IV is 4. I (1) stands before a larger symbol, so it is subtracted: −1 + 5 = 4.
Is IV 5 or 4?
IV is 4. I (1) stands before a larger symbol, so it is subtracted: −1 + 5 = 4.
