Random Number Generator
Generate one or many random numbers in any range — integers or decimals with configurable precision, with or without repeats, exclusions, and sort order. Set a seed to reproduce the exact same draw later. Great for draws, sampling and testing.
Input
Settings
Comma-separated numbers to skip during generation.
Same seed + same settings always produces the same numbers.
Output
Your numbers will appear here.
Guides
What does this generator do?
It produces truly arbitrary numbers within any range you choose. Generate a single number or up to 100 at once, as integers or decimals (with 0–10 decimal places), and decide whether repeats are allowed — turn them off for lottery-style draws where every number must be unique. You can also exclude specific numbers, sort the results, and set a seed to reproduce the exact same draw later.
Common uses
- Draws and giveaways — pick winning entries without bias, excluding numbers already claimed.
- Games and teaching — dice rolls, quiz order, random grouping.
- Development and testing — quick sample data in a specific range, with a seed for reproducible test fixtures.
- Lottery-style number picks — unique draws sorted for easy reading, with previously-drawn numbers excluded.
How to use it
- Set how many numbers you need and the min/max range.
- Choose integer or decimal (and precision for decimals).
- Untick Allow repeated numbers if every result must be unique.
- Optionally list numbers to exclude, choose a sort order, and set a seed for a repeatable draw.
- Hit Generate — copy or download the results.
Note: numbers come from your browser's pseudo-random generator (or a seeded deterministic one, if you set a seed). That's perfect for games, sampling and testing, but for cryptographic purposes use a dedicated secure generator.
Privacy
Everything runs locally in your browser — nothing is sent to a server.
Use it from code
From 3 credits per callREST API
curl -X POST https://api.iotools.cloud/v1/tool/random-generator/numbers \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"count": "5",
"min": "1",
"max": "100",
"allowRepeat": "true",
"numberTypes": "integer"
}'Swap in your own key from your account. The tool's fields are the body — no wrapper.
Ask an AI agent
Use the IOTools `random-generator__numbers` tool (Random Number Generator) on this input:
YOUR_INPUT_HEREPaste this at any agent connected to the IOTools MCP server, then add your input.