Have you ever paused while writing the number 40 and wondered: is it spelled forty or fourty? You’re not alone.
Many people get confused because it is not spelled like other numbers, such as “thirty” or “twenty.” Students, writers, and bloggers often search this question. They want to write correctly.
Knowing the right spelling helps you not make mistakes in emails, school, social media, or papers. In this guide, we will give a quick answer. We will tell you where this word comes from.
Then we will show the difference in British and American English. We will also point out common mistakes and show how to use it in everyday writing. By the end, you’ll never have to second guess whether it’s forty or fourty.
Forty or Fourty Quick Answer
The correct spelling is forty.
- ✅ Correct: I have forty apples.
- ❌ Incorrect: I have fourty apples.
Even though “fourty” looks logical because “four” has a “u,” it is never correct in modern English. Always use forty in all forms of writing.
The Origin of Forty
The word “forty” comes from Old English feowertig. It means “four tens.” A long time ago, people wrote it this way. Over time, the spelling changed to forty. They dropped the “u” to make it shorter and easier to write.
Sometimes, old books used fourty, but people stopped using it by the 1600s. Today, dictionaries like Oxford, Merriam Webster, and Cambridge say that ‘forty’ is the only correct way to spell it.
British English vs American English Spelling
Good news: both British and American English use forty. Some words, like ‘colour/color’ or ‘travelling/traveling,’ are spelled differently in the US and UK. But this number is spelled the same in both.
| Feature | British English | American English |
|---|---|---|
| Correct Spelling | forty | forty |
| Incorrect Spelling | fourty | fourty |
| Usage Examples | forty people attended the meeting | forty people attended the meeting |
Which Spelling Should You Use?
Always use forty, no matter where you are.
- US writers: forty ✅
- UK/Commonwealth writers: forty ✅
- Global audience: forty ✅
Avoid “fourty” completely. It is considered a spelling mistake everywhere.
Common Mistakes with Forty
Here are frequent errors people make:
- Writing fourty instead of forty.
- Mixing it with “four” in casual notes: “I have fourty books” ✅ wrong.
- Typing fortie or forty with a typo.
Tip: Remember, the “u” disappears after “four,” making it forty.
Forty in Everyday Examples
- Emails: “We received forty responses to the survey.”
- News: “The team scored forty points in the first half.”
- Social Media: “Can you believe she’s turning forty today?”
- Formal Writing: “The experiment was repeated forty times for accuracy.”
Forty Google Trends & Usage Data
According to search trends:
- Searches for “forty or fourty” peak during school terms and exam seasons.
- Most searches come from the US, UK, Canada, and Australia.
- On social media, people usually write ‘forty’ the right way. Some old blogs write ‘fourty’ by mistake.
This shows that people want to know how to spell it, not how many there are.
Keyword Variations Comparison Table
| Variation | Correct? | Notes |
|---|---|---|
| forty | ✅ Yes | Standard spelling worldwide |
| fourty | ❌ No | Common error, avoid using |
| fortie | ❌ No | Typo, not recognized in dictionaries |
| 40 | ✅ Yes | Numeral form, always correct |
FAQs
1. Can I use fourty anywhere?
No, “fourty” is always incorrect. Only “forty” is accepted.
2. Why is it spelled forty and not fourty?
The “u” was dropped over time to simplify spelling.
3. Is forty correct in both UK and US English?
Yes, there is no difference.
4. How do I remember the correct spelling?
Think: “drop the u after four → forty.”
5. Is 40 ever wrong?
No, using the numeral 40 is always correct.
6. Are there other numbers with unusual spellings?
Yes, like “twelve,” “thirteen,” and “twenty,” which also don’t fully follow spelling rules.
7. Can spellcheck detect fourty?
Most modern spellcheckers flag “fourty” as an error.
Conclusion
The correct spelling is forty, without a “u.” Do not write fourty. It is always wrong. This rule is the same in the US, UK, and everywhere.Use forty in emails, posts, essays, and papers. It makes your writing correct and easy to read.
Remember: “four → forty” drops the “u.” Check your writing if you are not sure. Writing forty the right way shows you are careful and clear.

Chase Nolan is an expert writer at xnamez.com, where he shares his deep passion for the art and meaning of names. Known for his creative insight and modern writing style, Chase explores the stories, origins, and trends behind names with precision and flair.