Many English learners and even native speakers often get confused between “forty or fourty.” Both words look very similar, and it is easy to think that either spelling might be correct. However, in English grammar, only one of these spellings is actually correct.
People frequently search for “forty or fourty” online because they want to make sure they are using the correct spelling in writing. This confusion often happens when writing numbers in words, especially in essays, emails, school assignments, and professional documents.
Understanding the difference between forty or fourty is important because using the wrong spelling can make writing look unprofessional or incorrect. In this guide, you will learn the correct spelling, the meaning of each word, grammar rules, examples, common mistakes, and easy tips to remember the right usage.
Quick Answer
The correct spelling is “forty.”
“Fourty” is incorrect and not accepted in standard English spelling.
Whenever you write the number 40 in words, you should always use forty, not fourty.
Meaning and Definition of Each Word
1. Forty
Forty is the correct spelling of the number 40 in English. It represents the quantity that comes after thirty-nine (39) and before forty-one (41).
Simple definition:
Forty is the word used to describe the number 40.
Examples:
- She turned forty last week.
- There were forty students in the classroom.
- The meeting will last forty minutes.
- He saved forty dollars for the trip.
The word forty is used in everyday writing, mathematics, counting, age descriptions, and many other situations.
2. Fourty
Fourty is a misspelling of the word forty.
It is not recognized as a correct word in standard English dictionaries or grammar rules. Many people mistakenly write fourty because they think the spelling should match the word four.
Example of incorrect usage:
- Incorrect: She is fourty years old.
- Correct: She is forty years old.
Even though the mistake is common, fourty should never be used in formal or correct writing.
Key Differences Between Forty or Fourty
Here are the main differences between forty or fourty:
- Forty is the correct spelling of the number 40.
- Fourty is an incorrect spelling and should not be used.
- Forty appears in dictionaries and grammar guides.
- Fourty is usually a spelling mistake caused by confusion with the word four.
- In exams, professional writing, or academic work, fourty will always be marked wrong.
Simply remember: 40 = Forty
Comparison Table
| Word | Meaning | Usage | Example |
| Forty | The number 40 | Used in writing numbers in words | She waited for forty minutes. |
| Fourty | Incorrect spelling of forty | Should not be used in correct English | ❌ He is fourty years old. |
Examples in Sentences
Below are several examples showing how forty is correctly used in sentences.
Examples with “Forty”
- My uncle is forty years old.
- The class has forty students.
- We walked forty kilometers during the trip.
- The movie lasted forty minutes longer than expected.
- She saved forty dollars for shopping.
- The company hired forty new employees this year.
- It took forty days to finish the project.
- The temperature reached forty degrees in the summer.
- He practiced for forty hours before the competition.
- The charity helped forty families last month.
Examples Showing the Mistake
Incorrect:
- She bought fourty apples.
- The race is fourty miles long.
Correct:
- She bought forty apples.
- The race is forty miles long.
Common Mistakes
Many people make mistakes when writing forty or fourty. Let’s look at the most common ones.
1. Adding the Letter “U”
Because the number four contains the letter u, people assume the same spelling should appear in forty.
Incorrect:
- fourty
Correct:
- forty
2. Writing Quickly Without Checking
Sometimes the mistake happens simply because people type quickly and do not check their spelling.
Incorrect:
- I ran fourty laps today.
Correct:
- I ran forty laps today.
3. Confusion with Similar Numbers
Other numbers such as fourteen and fourteen contain the word four, so writers think the same rule applies to forty.
However, forty is an exception.
Tips to Remember the Difference
Here are some easy memory tricks to remember the correct spelling.
1. Remember “Forty Has No U”
Think of this sentence:
“Forty drops the U.”
The word four has a u, but forty removes it.
2. Practice Writing the Number
Write the number 40 = forty several times when learning English.
This helps your brain remember the correct spelling.
3. Think of Famous Phrases
Many common phrases use the word forty, such as:
- Forty days and forty nights
- Forty years old
Seeing the correct spelling often helps you remember it.
4. Use Spell Check
Most writing tools automatically correct fourty to forty.
This can help prevent mistakes in emails and documents.
When to Use Each Word
Use “Forty”
Use forty whenever you write the number 40 in words.
Examples:
- Age: He is forty years old.
- Time: Wait forty minutes.
- Quantity: There are forty books on the shelf.
- Distance: The town is forty miles away.
Do NOT Use “Fourty”
Never use fourty in any type of writing.
This spelling is always considered incorrect.
Grammar Rules Related to Forty
Here are some grammar rules connected with the word forty.
1. Hyphenated Numbers
When writing numbers between 21 and 99, English uses a hyphen.
Examples:
- Forty-one
- Forty-five
- Forty-seven
Example sentence:
- She bought forty-five flowers.
2. Writing Numbers in Words
In formal writing, numbers below one hundred are often written in words.
Example:
- The meeting lasted forty minutes.
Instead of:
- The meeting lasted 40 minutes.
3. Ordinal Form
The ordinal form of forty is fortieth.
Example:
- Today is his fortieth birthday.
Synonyms or Related Words
Numbers do not usually have synonyms, but related number words include:
- Thirty-nine
- Forty-one
- Fifty
- Twenty
- Hundred
Related phrases include:
- Forty years
- Forty days
- Forty minutes
- Forty percent
FAQs about Forty or Fourty
1. Is it forty or fourty?
The correct spelling is forty. The word fourty is incorrect.
2. Why is forty spelled without a “u”?
English spelling evolved over time, and the standard spelling became forty instead of fourty.
3. Is fourty ever correct?
No. Fourty is always considered a spelling mistake.
4. How do you spell 40 in words?
The correct spelling is forty.
Example:
She waited for forty minutes.
5. Why do people write fourty?
People often confuse the spelling because the number four contains the letter u.
6. What is the ordinal form of forty?
The ordinal form is fortieth.
Example:
He celebrated his fortieth birthday.
Conclusion
The confusion between forty or fourty is very common, especially for English learners. However, the rule is simple: “forty” is the correct spelling, and “fourty” is always incorrect.
Remember that even though the word four contains a u, the number forty does not. This small spelling difference is important in writing and grammar.
By learning the correct spelling, practicing examples, and using the memory tips in this guide, you can easily avoid this common mistake. The next time you write the number 40, you will confidently use the correct word: forty.
