How to spell 30
30 is spelled thirty in English.
Quick reference
| US English (Cardinal) | thirty |
|---|---|
| Ordinal (30th) | thirtieth |
| On a US Check | Thirty and 00/100 dollars |
| Roman Numeral | XXX |
| Binary / Hexadecimal | 11110₂ · 0x1E |
On a check
To write $30.00 on a check, the words line reads:
Thirty and 00/100