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Dice Roller

Roll D4, D6, D8, D10, D12, D20, and D100 dice with modifiers.

D4 to D100Multiple diceRoll historyUpdated May 2026

Dice roller tool

Choose a die type and number of dice, or enter dice notation like 2d6+3.

Modifiers are added after all dice are rolled.

Quick rolls

Each die result is generated locally in your browser. This tool is for casual games, tabletop sessions, classrooms, and probability learning.

Latest roll

?

Ready

Current setup: 1d20

Roll result and history

No rolls yet. Choose a die type, enter a modifier if needed, then roll.

History

Newest first

Roll history will appear here.

Local dice rolls

Dice are generated in your browser with no backend call.

Notation support

Use common notation like 2d6, 1d20+5, or 4d6-1.

Copy-ready history

Copy latest results, totals, modifiers, and roll history.

Dynamic Probability Insights

Rolling 1d20 gives a range from 1 to 20 before modifiers.
No modifier is currently applied, so the final total equals the dice total.
A d20 has 20 equally likely outcomes.
The expected average final total is about 10.50.
Small roll histories can look uneven even when results are fair.

How Dice Rolling Works

Die sides

A die has a fixed number of sides.

Equal chance

Each side has an equal chance on a fair die.

Multiple dice

Each die is rolled independently.

Dice total

Individual dice results are added together.

Modifier

A positive or negative modifier is added after the dice total.

Dice Notation and Common Dice Types Explained

d6

A six-sided die, common in board games.

2d6

Roll two six-sided dice and add the results.

1d20+5

Roll one twenty-sided die and add 5.

d100

A percentile die result from 1 to 100.

Common tabletop dice

d4, d6, d8, d10, d12, d20, and d100 are widely used.

Custom dice

Custom-sided dice are useful for simulations and random selections.

Randomness, Totals, Modifiers, and Probability Notes

One die

One die has evenly distributed results.

Multiple dice

Middle totals are usually more common than extreme totals.

Modifiers

Modifiers shift the final total but do not change dice results.

Streaks

Repeated numbers and streaks can happen naturally.

Browser random logic

Virtual dice use browser-based randomization.

Casual use

Use this tool for games, learning, simulations, and quick random decisions only.

Common Dice Rolling Examples

Games, Classroom, and Decision-Making Use Cases

Tabletop roleplaying games
Board games
Classroom probability demos
Random classroom activities
Decision-making
Simulations
Math lessons
Game design testing
Party games
Practice rolls

Privacy and Local Processing Notes

Local rolls

Dice rolls are generated locally in your browser.

No account

No sign-up or account is required.

No backend storage

Roll history is not uploaded or stored by BlinkCalc.

Session history

History stays in the current browser session unless you copy it.

Copy control

Copied results stay under your control.

Lightweight use

The tool is intended for games, learning, and random decisions.

Method Explanation

1. Choose the die type and number of dice, or enter dice notation.
2. Generate one random result for each die.
3. Add the individual dice results.
4. Apply any positive or negative modifier.
5. Show the final total and individual dice values.
6. Add the result to roll history.
7. Copy or clear results when needed.

Frequently Asked Questions

A dice roller is an online tool that simulates rolling dice for games, tabletop sessions, classrooms, probability practice, and quick random decisions.

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