Flip a Coin
Fair 50/50 coin toss — heads or tails
Online Coin Toss
Click the button and get a fair heads-or-tails result, powered by your browser's cryptographic random generator — genuinely 50/50, not a pattern. Stats track heads, tails, total flips and your current streak.
Use it to settle decisions, pick who goes first, break ties in games, or teach probability: flip 100 times and watch the split approach 50/50.
Frequently Asked Questions
Is the coin flip really random?
Yes — it uses crypto.getRandomValues, the same randomness source used for cryptography.
Can I flip multiple times quickly?
Yes, flip as fast as the animation allows; stats accumulate until you reset.
What are the odds of 5 heads in a row?
About 3% (1 in 32) — streaks happen more often than intuition suggests.
Is it free?
Completely free, no signup.
Related Tools
Also try the Dice Roller, Random Number Generator or Decision Maker.
在线抛硬币
点一下按钮，就能得到一次公平的正反面结果——由浏览器的加密级随机数驱动，货真价实的 50/50。统计面板记录正面、反面、总次数和当前连击。
拿它来做决定、猜先手、游戏平局定胜负，或者教概率：抛一百次，看看比例如何逼近 50/50。
常见问题
抛硬币真的随机吗？
真的——使用 crypto.getRandomValues，与密码学同源的随机数。
能连续快速抛吗？
能，动画结束就能再抛；统计会一直累计直到重置。
连续 5 次正面的概率是多少？
约 3%（1/32）——连击比直觉中更常见。
免费吗？
完全免费，无需注册。