Coin Flip

Flip one coin or many and count heads versus tails.

Flips

Calculated Result

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Formula: P(heads) = 1/2 independent trials

About this calculator

This is a teaching RNG, not a casino draw. Probability stays 1/2 per trial.

FormulaP(heads) = 1/2 independent trials

Math.random() < 0.5 → Heads.

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