I need to go toilet or I need to go to the toilet?

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British people often say "I need to go to the toilet."

People from the United States usually say "I need to go to the bathroom."

Good luck!

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In our  school  students  always  use  this  term,"" May  I go to the  washroom 🚻"? 
Here  , students  use  instead  of  toilet 🚻
Washroom 🚻

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Definitely should add In "to the " .

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I need to go to the bathroom.