Quick Ans: Forty is the correct spelling of the number 40. Fourty is incorrect and should not be used in standard English writing. Although forty comes from the word four, it drops the letter u when written as a number. Remember: 40 is spelled forty, not fourty.
Forty or fourty is a common spelling question because the correct form looks different from what many people expect. Since the number four is spelled with a u, it seems logical to write the next form as fourty. However, English does not follow that pattern here.
The correct spelling is forty.
This spelling applies whether you are writing casually, academically, professionally, or in formal documents. The incorrect form fourty is simply a misspelling.
The confusion often happens because other number words follow familiar patterns. For example, four becomes fourteen and forty sounds as though it should contain the same letters. However, forty has its own established spelling.
Learning this small spelling rule can help you avoid mistakes in emails, essays, applications, business documents, and everyday writing.
Quick Answer and Key Takeaway
Forty is correct. Fourty is incorrect.
The number 40 is always spelled forty, not fourty.
Examples:
- She is forty years old.
- We need forty chairs.
- He scored forty points.
The easiest way to remember it is: four has a u, but forty does not.
Forty vs Fourty: Definition and Explanation
What Does Forty Mean?
Forty is the written form of the number 40.
It comes after thirty nine and before forty one.
Examples:
My father is forty years old.
The class has forty students.
She bought forty books.
What Does Fourty Mean?
Fourty is not the standard spelling of the number 40.
It is an incorrect spelling that usually occurs because writers connect the word with four.
Incorrect:
I have fourty dollars.
Correct:
I have forty dollars.
Is This a Grammar, Usage, or Vocabulary Issue?
This is primarily a spelling issue.
There is no separate meaning for fourty. It is simply a misspelling of forty.
When referring to the number 40, use forty in all standard forms of English.
Why Is Forty Spelled Without the U?
The spelling of forty developed differently from the spelling of four. English number words have changed over time, and their modern spellings do not always follow a perfectly predictable pattern.
That is why you should not assume that four must become fourty.
Compare:
| Number | Correct Spelling |
|---|---|
| 4 | four |
| 14 | fourteen |
| 40 | forty |
| 44 | forty four |
| 400 | four hundred |
Notice that forty is the exception to the pattern many learners expect.
Real World Usage Examples
Everyday Writing
I waited forty minutes for the bus.
She has forty dollars in her wallet.
Recap: Use forty whenever you write the number 40.
Academic Writing
The survey included forty participants.
Forty students completed the assignment.
Recap: Forty is the correct spelling in formal and academic writing.
Workplace Writing
We received forty applications.
The company hired forty new employees.
Recap: Professional documents should always use the standard spelling forty.
Regional or Global Usage Differences
There is no major regional spelling difference between forty and fourty.
British English, American English, Canadian English, Australian English, and other standard varieties use forty.
Fourty is considered a spelling error rather than an alternative regional spelling.
When NOT to Use Fourty
Do not use fourty when:
- Writing the number 40.
- Writing an academic paper.
- Preparing a business document.
- Writing an email or formal letter.
- Completing an application or official form.
- Describing someone’s age.
- Writing prices, quantities, or measurements.
Always use forty instead.
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 boxes. | We need fourty boxes. | Fourty is a misspelling. |
| He scored forty points. | He scored fourty points. | The number 40 is spelled forty. |
| Forty people attended. | Fourty people attended. | Standard English uses forty. |
| I waited forty minutes. | I waited fourty minutes. | Forty is the correct form. |
Easy Decision Rule
Remember this simple rule:
4 = four
40 = forty
Never add the u from four when spelling forty.
Exercises With Answers
Choose the correct spelling.
- She is ______ years old.
- We ordered ______ pizzas.
- The company has ______ employees.
- He saved ______ dollars.
- ______ students attended the lecture.
Answers
- forty
- forty
- forty
- forty
- Forty
Related Number Spelling Comparisons
Forty or Fourty
Forty is correct. Fourty is incorrect.
Fourteen or Fourty
Fourteen means 14, while forty means 40.
Examples:
She has fourteen books.
She has forty books.
Forty or Forty Four
The correct spelling is forty four when written as two words.
Example:
He is forty four years old.
In formal numerical contexts, you may also see 44.
FAQs
Is forty or fourty correct?
Forty is correct. Fourty is an incorrect spelling of the number 40.
Why is forty spelled without a U?
Forty developed with its own historical spelling, which does not retain the u found in four. Therefore, the correct modern spelling is forty.
Is fourty ever correct?
No. Fourty is not considered a standard English spelling of 40.
How do you spell 40 in English?
You spell 40 as forty.
How do you remember the spelling of forty?
Remember the simple phrase: four has a U, forty does not.
Is forty correct in British English?
Yes. Forty is the standard spelling in British English as well as other major varieties of English.
Is forty or fourty correct for age?
Use forty when describing age.
Example:
She is forty years old.
What is the difference between fourteen and forty?
Fourteen means 14, while forty means 40. Their spellings and pronunciations are also different.
Is forty one written as one word?
No. The standard spelling is forty one, written as two words.
Conclusion
The answer to forty or fourty is simple: forty is correct, and fourty is incorrect.
Although it may seem logical to spell 40 as fourty because the number four contains a u, English uses a different established spelling. The correct form is always forty.
This rule applies across standard varieties of English, including British and American usage. Whether you are writing an essay, email, application, business document, or casual message, use forty when referring to the number 40.
The best way to remember it is to separate the two spellings in your mind: four = 4, forty = 40. Do not carry the u from four into forty.
Whenever you hesitate, remember: four has a u, but forty does not. This simple memory trick will help you avoid one of the most common number spelling mistakes in English.