Independent browser Web Crypto trials
Run ten independent flips and compare the batch total with the expected half-and-half proportion.
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Exactly five heads occurs in 252 of the 1,024 equally likely ordered sequences, a probability of about 24.61%. A 5–5 split is common, but most ten-flip batches are not exactly even.
Every coin is sampled independently from the same tested random-bit function. The animation reveals results already selected in your browser and does not influence them.
For repeatable charts, run comparison, and CSV export, use the probability experiment.
A balanced random source makes each side equally likely on each trial; it does not promise an equal split in this particular batch. Repeated outcomes and imbalanced batches are expected parts of random variation. Read the method and limitations before using a result in a dispute.