If you’ve ever wondered whether you should write “what kind of” or “what kinds of,” you’re not alone. This is one of the most common English grammar questions for students, ESL learners, writers, and even native speakers. Since both expressions ask about types or categories, they may seem interchangeable at first. However, choosing the right one depends on whether you’re referring to a single kind or multiple kinds. Understanding this small grammar rule can make your English writing sound clearer, more natural, and more professional.
The good news is that the difference is easy to learn. In this guide, you’ll discover the difference between what kind of and what kinds of, learn the basic grammar rules, explore real-life examples, avoid common grammar mistakes, and understand why native English speakers sometimes use “what kind of” with plural nouns. By the end, you’ll know when to use what kind of, when to use what kinds of, and how to choose the correct expression with confidence.
Quick Answer
The difference between what kind of and what kinds of depends on whether you’re asking about one type or multiple types. Use what kind of music when referring to a single category or an uncountable noun, such as “What kind of music do you like?” Use what kinds of books when asking about several categories, such as
“What kinds of books do you read?” However, in everyday English, native speakers often say “What kind of books” because they treat books as one general category instead of several separate ones.
TL;DR
📌 Use what kind of for one type, category, or uncountable noun.
📌 Use what kinds of for multiple types or categories.
📌 Formal English usually follows this grammar rule, but everyday English is more flexible. That’s why phrases like “What kind of books do you read?” are common and sound natural to native speakers.
| ✨ Expression | ✅ Best Used For | 📝 Example |
| What kind of | One type or an uncountable noun | What kind of music do you like? |
| What kinds of | Multiple types or categories | What kinds of books do you enjoy? |
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What Does “What Kind of” Mean?
🔹 What kind of is used when you ask about one type, category, or class of something. It helps you identify a single group instead of several different groups. This expression is common in both spoken English and written English, making it an important part of English grammar.
Examples:
- ✅ What kind of car do you drive?
- ✅ What kind of music do you enjoy?
- ✅ What kind of food do you like?
💡 Tip: Think of kind as one category.
What Does “What Kinds of” Mean?
🔹 What kinds of is used when you ask about more than one type or category. It suggests that several different groups or options are possible. This expression is useful when discussing a variety of things and follows the basic singular vs. plural grammar rule.
Examples:
- ✅ What kinds of books do you read?
- ✅ What kinds of movies do you watch?
- ✅ What kinds of jobs interest you?
📖 If you expect multiple answers or categories, what kinds of is usually the better choice.
What Kind of vs What Kinds of – What’s the Difference?
Although these expressions look similar, they are not always used in the same way. The biggest difference is whether you are referring to one category or many categories. Knowing this simple rule can improve your English writing and help you avoid common grammar mistakes.
| ✨ Feature | What Kind of | What Kinds of |
| Meaning | One type or category | Multiple types or categories |
| Grammar | Usually singular | Usually plural |
| Best Use | Asking about one category | Asking about several categories |
| Example | What kind of music do you like? | What kinds of books do you read? |
⭐ Memory Tip: One kind = Singular. Many kinds = Plural.
The Basic Grammar Rule Explained
The grammar rule for kind and kinds is simple. Kind is singular, while kind is plural. In formal English, the noun should match the form of kind or kinds. Learning this rule makes it easier to choose the correct phrase in different situations.
Use “What Kind of” with Singular Nouns
Use what kind of before a singular noun when asking about one category or one type of something.
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Examples:
- ✅ What kind of phone do you have?
- ✅ What kind of flower is this?
- ✅ What kind of restaurant do you prefer?
🌼 Here, the focus is on one category, so the singular form is correct.
Use “What Kinds of” with Plural Nouns
Use what kinds of before plural nouns when asking about several categories or different groups.
Examples:
- ✅ What kinds of games do children enjoy?
- ✅ What kinds of languages can you speak?
- ✅ What kinds of animals live here?
📚 This structure follows the traditional English grammar rules for plural nouns.
Why Do Native Speakers Say “What Kind of Books?”
Many English learners ask, “Is ‘what kind of books’ correct?” The answer is yes, in many everyday situations. Native speakers often use what kind of + plural noun because they think of the plural noun as one general category, not as several separate categories.
For example:
- ✅ What kind of books do you like?
- ✅ What kind of movies do you watch?
🎯 In formal writing, many grammar guides prefer what kinds of books. However, in casual conversation, what kind of books sound completely natural and are widely used by native English speakers. This is why understanding both the grammar rule and real-life usage is important.
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Common Examples in Everyday English
The easiest way to understand what kind of and what kinds of is by seeing them in everyday conversations. These expressions appear in school, work, shopping, travel, and daily life. While what kind of often introduces one category, what kinds of asks about multiple categories. Both are common in English communication, so learning them with simple examples makes the rule easier to remember.
- 📚 What kind of book are you reading?
- 📖 What kinds of books do you enjoy?
- 🎵 What kind of music helps you relax?
- 🍕 What kinds of food do you like?
- 🎬 What kinds of movies do your friends watch?
- 💼 What kinds of jobs are available in your city?
Common Mistakes to Avoid
Many learners know the grammar rule but still make small mistakes. Paying attention to singular and plural nouns will help you choose the correct expression. Remember that context also matters because everyday English can be more flexible than formal grammar.
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| ❌ Incorrect | ✅ Correct | 💡 Why? |
| What kinds of book do you read? | What kinds of books do you read? | Kinds needs a plural noun. |
| What kind of cars is this? | What kind of car is this? | One car means one kind. |
| What kinds of music do you like? | What kind of music do you like? | Music is usually an uncountable noun. |
| What kinds of information do you need? | What kind of information do you need? | Information is uncountable. |
✅ Always check whether the noun is singular, plural, or uncountable before deciding.
Quick Memory Trick
🧠 You don’t need to memorize long grammar rules. Use this simple trick whenever you’re unsure.
⭐ Remember this formula:
- One kind ➜ What kind of
- Many kinds ➜ What kinds of
Think about the answer you expect. If someone will probably mention one category, choose what kind of. If they may list several categories, choose what kinds of. This simple habit helps you improve your English grammar, English writing, and everyday speaking without overthinking the rule.
Similar Expressions You Should Know
The words kind, type, and sort all refer to categories, but they are used in slightly different ways. Learning these related expressions builds your vocabulary and helps you write more naturally.
- 📌 Kind – Common in everyday English.
- 📌 Type – More common in formal, academic, or technical writing.
- 📌 Sort – Frequently used in British English and informal speech.
Examples:
- ✅ What type of computer do you use?
- ✅ What sort of weather do you enjoy?
- ✅ What kind of movies do you watch?
💡 Although these words have similar meanings, kind is the most natural choice in everyday conversation.
Formal vs. Informal Usage
Understanding the difference between formal English and informal English helps you choose the best expression for each situation. Grammar books often recommend following the traditional rule, but everyday conversations are usually more flexible.
📄 Formal Writing
- Prefer what kind of + singular noun
- Prefer what kinds of + plural noun
💬 Everyday Conversation
- Native speakers often say “What kind of books do you read?”
- This sounds natural because they refer to books as one general category.
✨ If you’re writing an essay, report, or business document, follow the formal rule. If you’re chatting with friends, either expression may sound natural depending on the context.
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Frequently Asked Questions
❓ Is “What kind of books” correct?
Yes. Although “what kinds of books” follows the traditional grammar rule, “what kind of books” is very common in everyday English. Native speakers often use it when referring to books as one general category.
❓ Can I use “what kinds of music”?
Usually, no. Since music is an uncountable noun, what kind of music is the more natural and grammatically correct choice.
❓ Which expression is more common?
Both are common. What kind appears more often in everyday conversations, while what kind is common when discussing several different categories.
❓ Which one should I use in formal writing?
For formal writing, follow the standard grammar rule:
- What kind of + singular or uncountable noun
- What kinds of + plural noun
❓ Do native English speakers use both?
Yes. Native speakers use both expressions depending on the context. Everyday speech is often more flexible than grammar textbooks.
What is the difference between “what kind of” and “what kinds of”?
“What kind of” is used when asking about one type or category, while “what kinds of” is used when asking about multiple types or categories. For example, “What kind of music do you like?” asks about a general type, while “What kinds of music do you enjoy?” can ask about several types.
What kind of vs what kinds of: Which is correct?
Both “what kind of” and “what kinds of” are grammatically correct. The choice depends on whether you are referring to one type/category or multiple types/categories. Use the singular form for a general or single category and the plural form when discussing different categories.
What kind of vs what kinds of examples?
Examples make the difference clear: “What kind of food do you like?” asks about a type of food, while “What kinds of food do you like?” suggests several types. Both forms can be correct depending on the intended meaning.
What kind of vs what kinds of in sentences?
In a sentence, use “what kind of” for a singular or general category and “what kinds of” for multiple categories. For example, “What kind of book is this?” refers to one category, while “What kinds of books do you read?” refers to different categories.
What kind of vs what kinds of in grammar?
The main grammatical difference is singular vs. plural. “What kind of” uses kind as a singular noun, while “what kinds of” uses kinds as a plural noun. The correct choice depends on whether one or multiple types are being discussed.
What kind of examples should I use?
Use “what kind of” when asking about one general type, such as “What kind of car do you drive?” Use “what kinds of” when asking about multiple types, such as “What kinds of cars are popular?”
What does “what kind of” mean?
“What kind of” is used to ask about the type, category, or nature of something. For example, “What kind of movie is it?” asks what type or category the movie belongs to.
Should I say “kind of” or “kinds of”?
Use “kind of” when referring to one type or a general category and “kinds of” when referring to multiple types. For example, “This kind of problem” refers to one type, while “These kinds of problems” refers to several types.
Conclusion
The difference between what kind of and what kinds of is simple once you understand the basic rule. Use what kind of when asking about one type or category, and use what kinds of when asking about multiple types. This guideline will help you write more accurately and speak with greater confidence.
At the same time, remember that real-life English does not always follow grammar rules exactly. Native speakers often say “What kind of books?” because they are referring to one broad category rather than several separate ones. 📚 By understanding both formal grammar and natural usage, you’ll know when to use what kind of, when to use what kinds of, and choose the expression that best fits the situation.
