How about vs How's about vs Why not

When to use each in English, with meaning, register, and examples.

How about

Top 2,000 (common)

How's about

InformalBeyond 10,000 (less common)

Why not

InformalTop 2,000 (common)
Most formal: How about
 How aboutHow's aboutWhy not
Pronunciation🇬🇧 //haʊ əˈbaʊt//🇺🇸 //haʊ əˈbaʊt//🇬🇧 //haʊz əˈbaʊt//🇺🇸 //haʊz əˈbaʊt//🇬🇧 //waɪ nɒt//🇺🇸 //waɪ nɑt//
MeaningWhat do you think about?What do you think about this?A suggestion to consider an idea or action.
ExampleHow about going to the movies tonight?How's about we go for a hike this weekend?You should try the new restaurant; why not?
RegisterNeutralInformalInformal
How commonTop 2,000 (common)Beyond 10,000 (less common)Top 2,000 (common)
Collocationshow about dinner, how about a meeting, how about some helphow's about dinner, how's about a visit, how's about a breaksuggest trying, consider doing, encouragement to
Common mistakesOmitting the subject after 'how about', Using 'how about' in affirmative statements instead of questions, Confusing with 'what about' in some contextsUsed in formal situations where 'how about' would be appropriate., Confused with other phrases like 'how about that'., Adding unnecessary words like 'how's about that'.Misusing in formal contexts where other phrases are more appropriate., Confusing with 'why not?' as a question instead of a suggestion.
Usage notesUse in suggestions or proposals. It’s neutral and can be used in both formal and informal contexts. Avoid in very formal writing.Used in casual conversations to propose or suggest an idea, often in friendly contexts. Avoid in formal settings.Commonly used in casual conversations to encourage someone to try or consider something. Avoid in formal situations.

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How about
How's about
Why not

Frequently asked questions: How about vs How's about vs Why not

What's the difference between How about, How's about, and Why not?

How about: What do you think about? How's about: What do you think about this? Why not: A suggestion to consider an idea or action.

Which is more formal: How about, How's about, and Why not?

How about is the most formal of these.

Can you show an example of each?

How about: How about going to the movies tonight? How's about: How's about we go for a hike this weekend? Why not: You should try the new restaurant; why not?

Can I use How about, How's about, and Why not interchangeably?

Not always. How about, How's about, and Why not are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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