01
Random Picker
Picks one or more random items from a list you paste — names, options, prizes or anything else.
Random Number Generator
Generates truly random numbers in any range, with or without repeats, using the browser's cryptographic RNG.
Generators
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Free, unlimited
Fill in the fields and press Generate.
In short
Random Number Generator is a free online tool on inputtesthub.com that generates truly random numbers in any range, with or without repeats, using the browser's cryptographic RNG. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Random Number Generator
- Set the range, count and options you need.
- Press Generate to produce a fresh set of values.
- Copy the whole set, or click any single value to copy it on its own.
About the Random Number Generator
The Random Number Generator generates truly random numbers in any range, with or without repeats, using the browser's cryptographic RNG. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Picking a winner from numbered entries.
- Generating test data.
- Making a fair random choice.
Details
| Source | crypto.getRandomValues — not Math.random, which is seeded and predictable |
|---|---|
| Bias | Rejection sampling is used so every value in the range is equally likely, which naive modulo arithmetic does not guarantee |
Frequently asked questions
Does the Random Number Generator cost anything?
There is no cost and no cap. The Random Number Generator is not a demo of a paid product, so nothing is held back or watermarked.
Is what I paste into the Random Number Generator stored?
No. The Random Number Generator runs entirely in your browser using JavaScript. Your input never reaches inputtesthub.com or any third party — open your browser's Network tab while you use it and you will see no request go out.
When would I actually need the Random Number Generator?
Typical uses: picking a winner from numbered entries. Generating test data. Making a fair random choice. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
What figures does the Random Number Generator work from?
Source is crypto.getRandomValues — not Math.random, which is seeded and predictable. Bias is Rejection sampling is used so every value in the range is equally likely, which naive modulo arithmetic does not guarantee. These are printed on the page itself, so you do not have to take them on trust.
Will this work on a tablet?
Yes. The page is responsive and the page works in Chrome, Safari, Firefox, Edge and Samsung Internet on both Android and iOS. There is no app to install and nothing to sign into.
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