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随机数生成器

随机选一个数字

在浏览器中运行 · 无需上传

此工具及本页说明目前仍为英文。功能完全相同：一切都在你的浏览器中运行。

What to pick
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Picked with your browser's cryptographic random generator, so every result is equally likely.

  • 任何内容都不会离开你的设备
  • 服务器不限制文件大小
  • 无需注册，无水印
  • 免费

How to pick a random number

  1. Set the lowest and highest numbers, and how many you want.
  2. Choose whether repeats are allowed, and the order.
  3. Press Pick again for a new result, or copy the numbers.

Fair results

Every number comes from your browser's cryptographic random generator, and is picked without bias, so every value in the range is exactly as likely as any other. "No repeats" works like drawing numbered balls from a bag.

Pick from a list

Switch to "From a list", paste names or options (one per line) and pick one or more. Useful for raffles, deciding who goes first, or splitting tasks.

常见问题

Can I use this for an official lottery or a legal draw?

The randomness is strong, but a draw that has to be checked by others needs a process they can verify; a web page can't prove how it was used.

Is anything sent anywhere?

No. The calculation happens in your browser as you type; nothing is sent anywhere.