Dice Roller

Roll multiple virtual dice instantly. Supports D4, D6, D8, D10, D12, D20, D100, custom sided dice, modifiers, roll history, and detailed statistics. 100% free.

Summary:This Dice Roller helps you roll virtual dice (D4 to D100, or custom) with custom modifiers and detailed average statistics instantly in your browser.

Settings

Select Dice Type
2
Roll History (Last 10)
No rolls yet — roll some dice to get started.

Embed this Tool on Your Website

Copy this code snippet to add the Dice Roller to your blog or website for free. It adjusts dynamically to mobile and desktop screens.

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How to Use Dice Roller

Our Dice Roller is a free web utility designed to simplify random rolls. To use this online tool: 1. Choose your dice type (D4 through D100, or Custom). 2. Select the quantity of dice to roll (1 to 50). 3. Input an optional modifier to add or subtract from your total. 4. Click the 'Roll Dice' button to trigger the spin animation. 5. View your total sum, average, min/max values, and review previous rolls in the history panel below.

Dice Roller Formula / How It Works

Clicking Roll calls the browser's cryptographic random number API (crypto.getRandomValues) to yield unbiased integer results between 1 and the specified number of sides for each die.

Formula:Total = Σ(Rolls) + Modifier; Average = Σ(Individual Rolls) / Number of Dice
Example Calculation:

For example, rolling 3d6 with a modifier of +2 will roll three separate six-sided dice (e.g. rolling 4, 3, and 5) and add 2, resulting in a total sum of 14.

Frequently Asked Questions

The tool uses JavaScript's cryptographic-strength random number generator values mapped across the selected number of sides to guarantee mathematically unbiased outcomes.

We support standard Dungeons & Dragons dice: D4, D6, D8, D10, D12, D20, and D100, alongside a custom option where you can specify any number of sides between 2 and 1000.

Yes! You can enter a modifier value (positive or negative) in the settings box, and it will be added or subtracted from the total sum of your roll.

The tool keeps a local running history of your last 10 rolls during your active browser session so you can easily review previous results.

Yes! The interface is fully responsive, fitting dice grids onto any mobile viewport width without overflow or horizontal scrollbars.

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