What does dice notation mean?

Notation like 2d6+1 means roll two six-sided dice and then add one to the subtotal.

Does this support negative ranges and modifiers?

Yes. Number mode supports negative minimum and maximum values, and dice mode supports positive or negative modifiers.

Math

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Random Number Generator

Generate random numbers in bulk or switch to dice mode for tabletop-style rolls with subtotal, modifier, and total.

Last updated: March 13, 2026

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Interactive tool

The live form, validation, and result state for Random Number Generator load after the page scripts run. The content below summarizes how the tool works and links to related pages in the catalog.

Generate random integers across custom ranges, control duplicate behavior, and roll RPG-style dice with modifier support.

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How to use Random Number Generator

1
Enter your inputs into the Random Number Generator form.
2
Adjust optional settings so the scenario matches your real-world case.
3
Review the result, then tweak one variable at a time to compare outcomes.
4
Keep your best scenario as a baseline for future decisions.

Use these outputs as quick checks for repeatable math and planning tasks.

Best use cases

Quickly evaluate random number generator decisions without switching tools.

Solve routine percentage and arithmetic problems faster than manual methods.

Validate quick calculations before sharing numbers at work or school.

Check alternate inputs to understand sensitivity and edge cases.

How it works

Generate random integers across custom ranges, control duplicate behavior, and roll RPG-style dice with modifier support.

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FAQ

Yes. Turn off duplicates to force unique values, as long as the requested count does not exceed the available range.

Tips for better results

Verify units and decimal precision before using the result elsewhere.
Test edge values to avoid hidden rounding assumptions.
Use the calculator output as a check against manual arithmetic.

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