Quick Ans: Forty is the correct spelling of the number 40. Fourty is incorrect and should not be used in standard English. Although “forty” comes from “four,” it does not keep the letter “u.” The correct forms are forty, fortieth, and forty something.
Are you confused about whether to write forty or fourty? You’re not alone. This is one of the most common spelling mistakes in English because the word “forty” looks like it should come from “four” with a simple ending.
However, English spelling does not always follow an obvious pattern. Although we write “four,” the number 40 is spelled “forty,” not “fourty.” The same spelling appears in phrases such as “forty years,” “forty people,” and “forty dollars.”
Knowing the correct spelling matters in school assignments, emails, business writing, applications, and everyday communication. A small spelling error can make otherwise clear writing look careless.
The good news is that the rule is very easy. Whenever you mean the number 40, use “forty.” Never add the “u” from “four.”
Quick Answer: Forty or Fourty?
| Word | Correct? | Example |
|---|---|---|
| Forty | Yes | She is forty years old. |
| Fourty | No | She is fourty years old. |
The correct spelling is always forty. Remember: four loses its “u” when it becomes forty.
Definition and Explanation
Forty
“Forty” is a number word and can function as a determiner, pronoun, or noun depending on the sentence.
It represents the number 40.
Examples:
There are forty students in the class.
He saved forty dollars.
Forty is an even number.
Fourty
“Fourty” is an incorrect spelling of “forty.” It may appear in informal writing or online because people naturally connect it with the word “four.”
However, dictionaries and standard English use “forty.”
| Number | Correct Spelling | Incorrect Spelling |
|---|---|---|
| 4 | four | No common alternative |
| 14 | fourteen | fourten |
| 40 | forty | fourty |
| 44 | forty four | fourty four |
The important point is simple. “Four” and “forty” do not follow exactly the same spelling pattern.
Is This a Grammar, Usage, or Vocabulary Issue?
The difference between “forty” and “fourty” is a spelling issue.
“Forty” is the standard spelling, while “fourty” is a misspelling. The meaning is not different because “fourty” does not represent a separate number.
The same rule applies whether you use the word in formal or casual writing. Therefore, always choose “forty” when writing the number 40.
Real World Usage Examples
Workplace Example
“Our company has forty employees.”
Here, “forty” correctly describes the number of employees.
Recap: Use “forty” in professional documents, emails, and reports.
Academic Example
“The experiment included forty participants.”
The spelling remains “forty” in academic writing.
Recap: Academic writing requires the standard spelling “forty.”
Everyday Example
“I waited for forty minutes.”
The word describes a period of 40 minutes.
Recap: Everyday writing and speech also use “forty.”
Regional or Global Usage Differences
“Forty” is the standard spelling across major varieties of English, including British, American, Canadian, and Australian English.
Unlike some words that have different regional spellings, “forty” does not change depending on the country.
You may see “fourty” online, but this does not make it an accepted alternative spelling. It remains a spelling mistake.
When NOT to Use It
Do not write “fourty” when you mean the number 40.
Do not assume that “four” must keep its “u” in every related number.
Avoid using “fourty” in formal documents, schoolwork, or professional communication.
Do not change “forty” to “fourty” simply because the pronunciation relates to “four.”
Remember that “fortieth” is also spelled without the “u.”
Common Mistakes and Corrections
| Correct Sentence | Incorrect Sentence | Why |
|---|---|---|
| She is forty years old. | She is fourty years old. | “Forty” is the correct spelling. |
| We need forty chairs. | We need fourty chairs. | The number 40 is spelled “forty.” |
| He waited forty minutes. | He waited fourty minutes. | “Fourty” is a misspelling. |
| She came fortieth in the race. | She came fourtieth in the race. | “Fortieth” also drops the “u.” |
Decision Rule: If you mean the number 40, always write forty, never “fourty.”
Exercises With Answers
Choose the correct spelling.
- I have _____ dollars.
- The class has _____ students.
- She celebrated her _____ birthday.
- We walked for _____ minutes.
- He finished _____ in the competition.
Answer Key
- forty
- forty
- fortieth
- forty
- fortieth
Related Concepts and Comparisons
Readers may also search for four vs forty, forty spelling, how to spell forty, fortieth spelling, numbers in English, spelling numbers, fourteen vs forty, and common English spelling mistakes.
FAQs
Is forty or fourty correct?
“Forty” is correct. “Fourty” is a common spelling mistake and should not be used in standard English.
Why is forty spelled without a u?
English number words have developed through historical spelling changes. Although “forty” relates to “four,” its standard spelling does not include the “u.”
How do you spell 40 in words?
The correct spelling of 40 is forty. For example, “There are forty students.”
Is fourty a word?
“Fourty” is not the standard spelling of the number 40. If you mean 40, write “forty.”
What is the difference between forty and fourty?
There is no difference in meaning because “fourty” is simply an incorrect spelling. “Forty” is the correct form.
How do you spell 40th?
The correct spelling is fortieth. It does not contain the “u” from “four.”
Is forty spelled differently in British English?
No. “Forty” has the same spelling in British and American English. Both use “forty,” not “fourty.”
Why do people spell forty as fourty?
People often make this mistake because they connect “forty” directly with “four.” The missing “u” makes the correct spelling less obvious.
Conclusion
When choosing between forty or fourty, always choose forty. It is the standard spelling of the number 40, while “fourty” is a common spelling mistake.
The confusion happens because the word looks related to “four.” Even so, “forty” does not contain the letter “u.” The same pattern appears in “fortieth,” which is the correct spelling for 40th.
This rule applies everywhere. Whether you are writing a school assignment, professional email, report, application, or casual message, “forty” is the correct choice.
You don’t need to memorize a complicated grammar rule. Just remember one simple fact: 40 is forty, not fourty.
Practical tip: when writing the number 40, pause for a second and check the spelling. If you see “fourty,” remove the “u.” That quick check will prevent one of the most common English number spelling mistakes.