yCalculator

Random Number Generator

Last updated: April 2026

Random integer

Press Space to regenerate.
42

Min generated

42

Max generated

42

Average

42

History

How random number generation works

This generator uses the browser's pseudo-random number generator to produce values in the range you choose, then rounds or shuffles depending on the mode.

True random vs pseudo-random

True randomness comes from physical processes. Browser random numbers are pseudo-random, which is fast and suitable for games, classroom activities, draws, and everyday selection tasks.

Uses of random number generators

Random generators are useful for selecting winners, making teams, drawing lottery-style sets, choosing study questions, generating sample data, and adding fairness to simple decisions.

What does this mean?

This calculator is designed to help you understand the likely number before you make a decision or start an application.

Your result should be checked against official UK guidance, especially if your circumstances include dependants, exemptions, prior leave, or a complex immigration history.

Treat the figure as a planning tool rather than legal advice. Where the answer affects an application deadline or major payment, speak to an authorised adviser.

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