30 in Words: How to Write 30 (Thirty)
Quick Facts About 30
Ordinal Form
thirtieth
Scientific Notation
3 × 101
Zeros Count
1
zero digit
For USD Check
Thirty dollars
For EUR Check
Thirty euros
For GBP Check
Thirty pounds
What is the ordinal number of 30? How do I spell the ordinal number 30. How do I correctly fill in the amount of 30 in a cheque.
Perhaps, you have reached us looking for the answer to a question like: Convert 30 to words. This number to words converter can also be useful for foreign students of English (ESL) who need to learn both how to write and how to pronounce the cardinal and ordinal numbers. It can even help to answer a worksheet of cardinal and ordinal numbers.
To use this calculator/converter just fill in any number and then click on the button 'Convert to Words'. To hear the pronunciation, please click on the play buttons.
How to write 30 in words
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Enter the number
Type 30 into the number field and press "Convert to Words".
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Read the cardinal form
The cardinal (counting) form is thirty.
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Check the ordinal form
The ordinal (position) form is thirtieth.
Number Definitions
What is a Cardinal Number?
A number (such as 1, 2, 100 or 253) used to indicate quantity but not order. A kind of number used to denote the size of a mathematical set, including infinite sets. A Cardinal Number is a number that says how many of something there are.
What is an Ordinal Number?
In common usage, an ordinal number is an adjective which indicates the place, position or order of an object in relation to others: first, second, third, etc. An Ordinal Number tells the position of something in a list, such as 1st, 2nd, 3rd, 4th and so on.
In short:
- Cardinal → how many
- Ordinal → position
Frequently Asked Questions
How do you write 30 in words?
30 in words is written as 'thirty' (cardinal) or 'thirtieth' (ordinal).
What is the ordinal form of 30?
The ordinal form of 30 is 'thirtieth'.
Going the Other Way (Words → Number)
Have a number written in words and want the digits back? Our Words to Numbers Converter goes from any spelled-out number (cardinal or ordinal) to its numerical form. For example, “Thirty” back to 30.
Same Number, Different Notation
30 in Roman numerals is a useful alternative notation for dates, outlines, and historical contexts. See our Arabic to Roman Calculator for the full conversion — including the additive/subtractive rules (IV vs IIII) and the upper limit at 3,999 (MMMCMXCIX).
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