Calculators
Calculators

Monty Hall Problem Simulator

Should you switch doors? Play it and find out.

Private by design

Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.

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How to use Monty Hall Problem Simulator

  1. Play: pick a door, see the host open a goat, then stay or switch.
  2. Or run many rounds with 3 to 10 doors.
  3. Compare the win rates of switching and staying with theory.
Read the detailed guide →

What are the limits of Monty Hall Problem Simulator?

Runs entirely in your browser with random numbers from your device; results vary from run to run, as they should.

YOUR BROWSER, YOUR CHOICE