Coin Flip

Flip a coin — heads or tails. Flip several at once, set a bias, and track the running tally.

Number of flips

Bias options (advanced)

Use weighted bias

Heads chance%

Flip history

Set how many flips you want — 1 for a single decision, more for a batch.
Leave the bias off for a fair 50/50 coin. Turn it on and set a percentage if you need a weighted toss.
Press Flip.
Read the latest result, the running heads/tails tally, and the flip history below.

Settling a tie or making a yes/no decision

Flip once and let the coin decide between two options.

Running a quick probability check

Flip many times to see how close the split stays to 50/50.

Simulating a biased outcome

Use a weighted bias when modelling a coin that is not perfectly fair.

Deciding who goes first in a game

One flip, heads or tails, to break a dead heat.

Example

1 flip, fair coin

Either Heads or Tails, with a 50/50 chance each.

Example

10 flips, fair coin

A sequence of 10 results plus a running heads and tails count.

Example

1 flip, 70% heads bias

A single flip where heads is more likely than tails.