Decision context
Match the random method to the stakes of the decision
Random output is not automatically secure, fair, or representative. The right generator depends on what the result will be used for.
Treat the list as a low-stakes randomized selection unless you have independently verified the required security or sampling properties.
Random-looking is not secure
A general browser random value is not a substitute for a cryptographically designed secret-generation process.
Small samples vary
A short list can appear clustered or uneven even when it is generated without an intended pattern.
Illustrative scenario
A teacher uses a 1-to-30 run to choose practice problems. The same tool would not be appropriate for assigning a high-stakes prize because that would require a documented process.
What this calculator does
The calculator selects values between the entered minimum and maximum and formats them as integers or decimals. Quantity and decimal settings control the displayed output.
When to use it
Use it for low-stakes selections, practice datasets, randomized exercises, or a quick simulation input. Do not use it for passwords, security tokens, gambling, legal drawings, or decisions requiring audited randomness.
Inputs explained
- Mode: whether generated values must be whole numbers or may include decimal places.
- Minimum: the lower bound for generated random values.
- Maximum: the upper bound for generated random values.
- Quantity: how many values to generate.
- Decimals: how many decimal places to show in decimal mode.
Formula or method
The browser generates pseudo-random values and maps them into the requested interval. Integer mode rounds within bounds; decimal mode keeps the selected precision for display.
Worked example
A 1-to-10 integer run can return any allowed whole number. Generating a decimal from 0 to 1 is a different task because formatting and boundaries are handled differently.
How to interpret the result
The values are random-looking browser output for ordinary use. This page does not certify independence, auditability, secure entropy, or a statistically representative sample.
Decision check before acting
Record the range, quantity, decimal setting, and purpose when the list needs to be repeated or explained to someone else. Decide in advance whether duplicates are acceptable and how a generated value will be used. If fairness, security, or reproducibility matters, choose a documented process designed for that purpose instead of treating a one-click list as evidence.
Practical checks before using the result
- Set the lower and upper bounds deliberately and record them if the output will be discussed later.
- Use a dedicated cryptographic method for secrets or a documented sampling procedure for research.
Common mistakes
- Assuming a short random list will look evenly distributed.
- Using a general random generator as a password generator or security token source.
Limitations and disclaimers
This generator is intended for low-stakes browser-based selections and practice data. It is not audited for cryptographic security, regulated drawings, gambling, research sampling, or any decision that requires a reproducible or independently witnessed random process.
Related calculator context
Use Password Generator for a stronger password-oriented workflow and Standard Deviation Calculator after collecting an actual dataset.
Frequently Asked Questions
Is this random number generator suitable for passwords or prize drawings?
A general browser random value is not a substitute for a cryptographically designed secret-generation process. The values are random-looking browser output for ordinary use. This page does not certify independence, auditability, secure entropy, or a statistically representative sample.
Which range and purpose should be recorded before generating values?
Set the lower and upper bounds deliberately and record them if the output will be discussed later. Use a dedicated cryptographic method for secrets or a documented sampling procedure for research.
Which high-stakes uses are outside this random generator?
This generator is intended for low-stakes browser-based selections and practice data. It is not audited for cryptographic security, regulated drawings, gambling, research sampling, or any decision that requires a reproducible or independently witnessed random process.