Neatbo.

Random number generator

Draw integers from a chosen range, with or without repeats, and copy the result in order.

Browser-local processingInputRange + draw mode + countOutputOrdered integers
  1. 1Add input
  2. 2Adjust settings
  3. 3Get your result

Tool input and files are processed in this browser without being uploaded.

Your input

Inputs are kept temporarily in this tab when switching tools. Refreshing or closing clears them; large results may need to be regenerated.

⌘ / Ctrl + Enter to run
How should numbers be drawn?

This range contains 100 possible integers. Generate 1–1,000 numbers per draw.

Preparing the tool…

Before you start

Draw one or more whole numbers from an inclusive range. Choose independent draws or a sample without repeats, then copy or download the ordered list.

How to use this tool

  1. Choose whether numbers may repeat. Use No repeats when selecting distinct numbered items.
  2. Enter inclusive minimum and maximum integers, then the number of draws. Check the range capacity shown below the fields.
  3. Generate a new draw, then copy or download the ordered numbers, one per line.

Supported inputs and limits

Generates 1–1,000 integers per draw within the browser's safe-integer range. A no-repeats draw cannot exceed the number of integers in the range.

The browser's cryptographic random source is required. Results are not saved or independently verifiable as lottery records.

Worked example

Example input

Choose ten distinct item numbers from 1 through 10.
Example options
{
  "min": 1,
  "max": 10,
  "count": 10,
  "unique": true
}

Example output

One possible draw (your result will differ):
9
2
4
1
8
3
6
10
7
5

When something does not work

If a no-repeats draw fails, reduce the count or widen the range. Enter whole numbers only; a failed draw clears the earlier result.

Frequently asked questions

What is the difference between the two modes?

Allow repeats makes independent draws, so a number can occur several times. No repeats draws without replacement: each integer can occur at most once. Both include the minimum and maximum.

Can I use this as a verified lottery draw or reproduce it later?

No. The tool uses the browser's cryptographic random source and avoids modulo bias, but it does not publish a seed or audit trail. Download the list if you need to keep the result; it is not a certified or reproducible draw.

Documentation & further reading

Calculation guide: units, fractions, statistics and rounding →Time zones, workdays and rounding: explain calculation results →

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