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Randozi

Flip a Coin

Heads or tails? Tap to toss a fair virtual coin — every flip is an independent 50/50.

How it works

  1. Press Flip the coin. The side is drawn first with your browser's cryptographic random generator, then the coin lands on it.
  2. Flip again as often as you like: the counter under the coin shows how many heads and tails you got.
  3. Recent results lists your last flips; Reset clears the counter.

What people use it for

  • Settle a 50/50

    Who goes first, which film, which way to turn — call it before the coin lands.

  • Sports and games

    Kick-off, first serve or choosing sides when nobody has a coin in their pocket.

  • Probability lessons

    Flip 50 times and watch the counter drift towards half heads, half tails.

Questions

Is the online coin flip really 50/50?
Yes. Each flip draws heads or tails with equal probability from the Web Crypto API, and earlier flips have no influence on the next one.
I got heads five times in a row. Is it broken?
No. Streaks are normal: five heads in a row happens about once every 32 sequences of five flips. Over many flips the counter evens out.
Is there a sound?
A short chime when the coin lands. Use the Sound button to turn it off; the choice is remembered on this device.