How Do You Spell 30 In Words Perfectly Without Mistakes

Spelling of 30 in words

How do you spell 30 in words:
Convert 30 dollars in words (USD):
Thirty Dollars
30 spelling in British Pound amount (GBP):
Thirty Pounds
How to write 30 Canadian dollars in letters (CAD):
Thirty Canadian Dollars

How to write numbers in words similar to 30

Other conversions of the number 30

How to Spell 30

The number 30 is spelled as ‘thirty’. This two-syllable word combines the words ‘three’ and ‘ty’, the latter of which denotes a multiple of ten. Therefore, when we spell out the number, it becomes t-h-i-r-t-y.

Spelling Details and Variations

There are no notable spelling variations for the number 30. However, when it comes to the ordinal form, the spelling changes slightly. To spell the ordinal number for 30, you add “-th” at the end to get ‘thirtieth’. The numerically expressed ordinal number is 30th.

When to Spell Out 30 and When to Use the Numeral

Generally, whole numbers less than one hundred are spelled out in text, which means ‘thirty’ should be spelled out rather than using the numeral ’30’. However, the numeral should be used in technical contexts, when paired with units of measurement, or in graphical representations. If ’30’ appears at the beginning of a sentence, it should be spelled out.

Practical Examples in Sentences

  • She has thirty books in her collection.
  • There are 30 students in the class, each with a unique story.
  • The recipe calls for thirty grams of sugar.
  • I can’t believe you are turning thirty this year!
  • Thirty seconds remain on the clock. Hurry!

Special Considerations

In financial contexts, ’30’ is typically used in numerals, as when describing a sum of money, such as $30.00, to provide clear and precise information. In statistical contexts, the number ’30’ is considered a significant sample size, often referred to as ‘n=30’. In technical or scientific writing, one would use the numeral, like “30% of the sample”, for clarity and conciseness.


The number 30 is integral to both everyday life and specific contexts, such as financial, technical, and statistical writing. Understanding when to spell it out and when to use the numeral is essential for clear communication. Thirty may just be another round number, but it plays a significant role in various domains, from marking significant birthdays to constituting baseline sample sizes in research.


  • Express the sum of 10 and 20 in words.
  • What is 30 divided by half? Write your answer in words.
  • If you attend a monthly event 30 times, how many years have you been going to this event? Write the answer in words.

Solutions to Exercises

  • The sum of 10 and 20 is thirty.
  • Thirty divided by half is sixty.
  • Attending a monthly event 30 times means you have been going to the event for two and a half years.

Frequently Asked Questions

How do you write 30 in words?

Thirty is the word form of the number 30.

Is 30 considered a large sample size in statistics?

Yes, a sample size of 30 is often considered sufficient to assume normal distribution in statistics.

How do you express 30 in ordinal form?

The ordinal form of 30 is written as thirtieth, or numerically as 30th.