Random Number Generator
Pick a range, choose how many numbers you want and press Generate. Each press draws fresh numbers using your browser’s secure random source.
Result
Please correct the highlighted fields.
Press Generate to draw numbers
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How the numbers are drawn
Whole numbers are drawn uniformly between the minimum and the maximum, both included. The tool avoids the small bias that a simple remainder would introduce by discarding values that would make some numbers more likely than others.
With “No repeats” every number appears at most once, which is like drawing from a hat. Decimals are drawn uniformly across the range and rounded to the places you choose. Nothing is sent to a server; the numbers are generated on your device.
Method
Integer = Minimum + random whole number below (Maximum − Minimum + 1)
Decimal = Minimum + random fraction × (Maximum − Minimum), roundedExample
A range of 1 to 100 with one whole number, like rolling a hundred-sided die:
- The range holds 100 possible numbers, each equally likely.
- Each press of Generate draws a new one, so the result changes every time.
Any whole number from 1 to 100, each with a 1% chance.
Assumptions and limits
- Minimum and maximum can be between −1,000,000,000 and 1,000,000,000.
- Up to 1,000 numbers per draw; decimals up to 6 places.
- Changing any setting clears the last draw, so you never see numbers that do not match the settings.