dopecalc

Random Number Generator

Generate one or more random integers within a specified range, using JavaScript's Math.random engine.

Generate Random Numbers

How many numbers?

About this Calculator

Generate one or more random integers within a specified range, using JavaScript's Math.random engine.

Formula & Calculations

Formula

Random Integer = floor(Math.random() * (max - min + 1)) + min
Where:
  • min=The lower bound of the random range (inclusive)
  • max=The upper bound of the random range (inclusive)
  • count=The number of random integers to generate

Assumptions

  • Uses pseudo-random number generation (Math.random) which is sufficient for everyday needs but not for cryptographic security.
  • Both min and max are inclusive bounds.
  • Generating very large counts may cause performance delays.

Calculation Examples

Example 1

Inputs:Min: 1, Max: 100, Count: 5
Result:42, 17, 89, 3, 56 (random values)

Five random integers are generated, each independently between 1 and 100 inclusive.

Example 2

Inputs:Min: 0, Max: 1, Count: 10
Result:0, 1, 1, 0, 1, 0, 0, 1, 1, 0

Simulates 10 fair coin flips by generating random values of either 0 or 1.

Frequently Asked Questions

Is this random number generator truly random?

No, it uses a pseudo-random algorithm (Math.random) that produces statistically random-looking numbers for most use cases, but it is not suitable for cryptographic or security applications requiring true randomness.

How does the calculator ensure both min and max are inclusive?

The formula uses (max - min + 1) to ensure the upper bound is included in the possible outcomes. Without the '+1', max would be exclusive.