Generate Random Bits
Create a sequence of random binary bits. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate Random Bits
- 1. Choose How many bits. There is nothing to paste into this generator. Set How many bits to the number of random ones and zeros you want, whether that is 8 for a quick byte or thousands for a noise file.
- 2. Pick a Separator. The Separator field decides how bits are joined. Leave it empty for a solid stream like 100110, use a space for readable groups, or a newline to get one coin flip per line.
- 3. Copy the bit stream. Copy the generated bits from the output pane into your simulation, worksheet or script. Every regeneration draws fresh randomness in your browser, so no two batches repeat.
When to use Generate Random Bits
Generate Random Bits is the simplest possible randomness source: a stream of independent ones and zeros at whatever length you ask for. Reach for it when you need coin flips, noise input for a decoder, or unpredictable payloads for a parser, and you want them formatted with your own separator rather than post-processed.
- Simulating a run of coin flips. A statistics lesson on streaks needs 200 fair coin tosses. Generate 200 bits with a newline separator, count the longest run of heads and compare it with the theoretical expectation.
- Feeding noise to an error-correction decoder. Testing a Hamming or Reed-Solomon decoder means throwing garbage at it. A long random bit stream makes a convenient uncorrelated channel input for measuring how the decoder behaves on pure noise.
- Generating one-off random decisions. Need an unbiased yes-or-no, or a random path through a binary decision tree? Generate a handful of bits and read them off in order instead of writing a throwaway script.
- Creating raw material for bit tools. Many binary utilities on this site want sample input. Generate a random stream here, then pipe it through the invert, rotate or RLE tools to see how each transformation behaves.
Examples
Thirty-two random bits
Output
1 0 0 1 1 0 …
Bits separated by spaces
Output
1 0 1 1 0 0 1 0
About the Generate Random Bits tool
Generate Random Bits does its work locally, right in the browser. Create a sequence of random binary bits. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Binary Tools collection on EditSafely, a set of 112 small, focused Binary utilities that share the same instant, private workspace.
You can shape the output with 2 settings, including How many bits and Separator, and the result refreshes the moment you change one. 2 worked examples further down the page show exactly what the tool produces for real inputs.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Generate Random Bits free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.