100 in Words – How to Spell 100
100 = One hundred
100 is written “one hundred” in English.
Step by step
- Split 100 into groups of three digits: 100.
- Write each group as hundreds, tens and ones, hyphenating 21–99.
- Join the groups: One hundred.
As an ordinal (for dates, rankings and anniversaries), 100 becomes “one hundredth”, abbreviated 100th.
Details
- In words
- One hundred
- For a check
- One hundred and 00/100 dollars
- Uppercase
- ONE HUNDRED
- Digits
- 3
- Roman numerals
- C
How it works
English numbers are read in groups of three digits — ones, thousands, millions and so on. Each group is spoken as hundreds, tens and units, compound numbers from twenty-one to ninety-nine take a hyphen, and in American usage the word “and” is saved for the decimal point. On a check, the cents follow as a fraction over 100.
Nearby values
Related conversions
Frequently asked questions
How do you spell 100?
One hundred.
How do I write 100 dollars on a check?
One hundred and 00/100 dollars.
Is there a hyphen in 100?
No — this number has no compound tens-and-ones part.
What is 100 in Roman numerals?
C.