What will you do vs What you gonna do

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

What will you do

Top 2,000 (common)

What you gonna do

InformalTop 2,000 (common)
Most formal: What will you do
 What will you doWhat you gonna do
Pronunciation🇬🇧 //wɒt wɪl juː dʊ//🇺🇸 //wɑt wɪl ju du//🇬🇧 //wɒt jʊ ˈɡənə dʊ//🇺🇸 //wɑt jə ˈɡɑnə du//
MeaningA question asking about someone's future actions.What are you going to do?
ExampleWhat will you do if it rains during the picnic?So, what you gonna do after school?
RegisterNeutralInformal
How commonTop 2,000 (common)Top 2,000 (common)
Collocationsdo something, do a task, do a favorWhat you gonna do next, What you gonna do now, What you gonna do later
Common mistakesConfusing tense by using present instead of future., Omitting 'will' in the question., Using 'what do you do' instead of 'what will you do' for future plans.Using 'what you gonna do' without context is vague., Confusing it with 'what are you going to do,' which is more formal., Omitting the subject and verb in more formal writing.
Usage notesUsed to inquire about future plans or intentions. Appropriate in both casual and formal settings.Used in casual conversation to ask about someone's plans. Not suitable for formal situations.

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What will you do
What you gonna do

Frequently asked questions: What will you do vs What you gonna do

What's the difference between What will you do and What you gonna do?

What will you do: A question asking about someone's future actions. What you gonna do: What are you going to do?

Which is more formal: What will you do and What you gonna do?

What will you do is the most formal of these.

Can you show an example of each?

What will you do: What will you do if it rains during the picnic? What you gonna do: So, what you gonna do after school?

Can I use What will you do and What you gonna do interchangeably?

Not always. What will you do and What you gonna do 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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