Coin, Dice & Probability Simulator

See experimental and theoretical probability converge.

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.

Preparing coin, dice & probability simulator

Preparing tool

How to use Coin, Dice & Probability Simulator

Choose coins or dice and how many per toss.
Set the number of tosses and press Run.
Compare your bars with the theory lines, watch the share settle, and export the data.

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