How to spell 400
400 is spelled four hundred in English.
Quick reference
| US English (Cardinal) | four hundred |
|---|---|
| Ordinal (400th) | four hundredth |
| On a US Check | Four hundred and 00/100 dollars |
| Roman Numeral | CD |
| Binary / Hexadecimal | 110010000₂ · 0x190 |
On a check
To write $400.00 on a check, the words line reads:
Four hundred and 00/100