Random Number Generator
Generate a random number between two values
Interesting fact
The speed of light in vacuum is exactly 299,792,458 meters per second by definition. Modern measurement systems use that constant as one of the foundations for defining distance, time, and many calculations in physics.
Tool Guide
Using random numbers well
This page is useful for quick decisions, simulations, sample data, and any workflow that needs a fair value between two bounds.
When to use it
- Pick a number for giveaways, games, or classroom exercises.
- Create sample ranges for forms, prototypes, or data checks.
- Generate decimals when you need a value for simulations or UI demos.
Practical tips
- Keep min and max in a narrow range when you want easier-to-compare results.
- Use decimal mode only when you truly need fractional output.
- If the result matters for fairness, generate it once instead of rerolling until you like the value.
FAQ
Why can the result be empty?
The generator waits until both bounds are valid. Once min and max are set, the button produces a number immediately.
Can I use decimals?
Yes. Turn on decimal mode when you need fractional values for simulations or design work.