Random Number Generator

Generate random numbers within a range. Single or multiple, with or without duplicates.

Entropy Params

Minimum

Maximum

Count

SAMPLES

Statistical Summary

Set your range and count, then generate random numbers.

About this calculator

Overview

True random uses physical entropy. Pseudo-random uses algorithms (e.g., Mersenne Twister). Both work for most applications.

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Pro Tips

Fun Facts

Formula: Random in [a,b]: a + (b−a+1) × random(). Integer: floor to get whole numbers.