Flip a Coin 100 Times
100 instant coin tosses with live stats
Please enter a valid number between 1 and 1,000,000.
Heads
0
0%
Tails
0
0%
Head Wins
0
Tail Wins
0
Total Flips
0
How to Use This Simulator
- 1The flip count is pre-set to 100. Change it to any number up to 1,000,000.
- 2Click Flip Now! to run all coin tosses instantly in your browser.
- 3Read the heads and tails counts with percentages for the current round.
- 4Session totals track cumulative wins across multiple rounds until you reset.
The 100-Flip Benchmark
One hundred flips is a common benchmark for probability demonstrations. At this scale, results reliably land within a few percentage points of 50/50, making deviations easy to spot and discuss. The standard deviation is exactly 5, so most results fall between 45 and 55 heads.
Frequently Asked Questions
About 7.96% - it's the single most likely outcome, but still occurs less than one time in twelve.
A result between 40 and 60 heads covers roughly 95% of all outcomes. Anything outside that range is unusual.
Larger sample sizes reduce relative variance. The Law of Large Numbers causes percentages to converge toward the theoretical 50%.