D20 Dice Roller - Online 20-sided Dice

Total Dice Rolls: 5,070

Last Updated: February 18, 2025 at 08:02 PM

Experience our D20 dice roller, perfect for RPG attack rolls, skill checks, and saving throws. Whether you need a single D20 roll or multiple dice simultaneously, our virtual dice simulator provides accurate, random results with realistic animations.

Try fullscreen mode for a better gaming experience on large screens!

For a better experience, try using a PC or tablet in fullscreen mode!

Roll History

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Add New Dice

Common Dice

Custom Number of Faces

Share Dice Configuration

Do you want to create an embeddable version of this configuration (d20)? Others will be able to use these dice on their websites.

Clear Roll History

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Available Dice Types

Choose from our collection of virtual dice for different gaming needs:

Four-sided dice for basic damage rolls

Traditional six-sided dice with dot patterns

Eight-sided dice for medium damage

D10

Ten-sided dice for percentile rolls

D12

Twelve-sided dice for higher damage

D20

Twenty-sided dice for skill checks

D100

Percentile dice for probability checks

Custom

Create dice with any number of sides (1-1000)

Understanding the D20 Dice Roller

A D20 dice roller simulates rolling a twenty-sided die, providing results from 1 to 20. This specialized dice type is the cornerstone of many role-playing games, used for attack rolls, saving throws, and skill checks. Each roll has an equal 1/20 probability, ensuring fair and random outcomes.

D20 Dice Probability Analysis

Basic Probability

• Single number probability: 1/20 (5%) for each number
• Critical failure (1): 5% chance
• Critical success (20): 5% chance
• Rolling 11 or higher: 50% chance
• Rolling 15 or higher: 30% chance

Multiple D20 Dice Probabilities

• Rolling double 20s (with 2 dice): 0.25% chance (1/400)
• Rolling with advantage (higher of 2 dice): 9.75% chance for 20
• Rolling with disadvantage (lower of 2 dice): 0.25% chance for 20
• All dice showing same number (with 3 dice): 0.0125% chance (1/8000)

Popular Uses for D20 Dice Roller

Gaming Applications

• Attack rolls in combat
• Skill checks and ability tests
• Saving throws
• Initiative rolls
• Critical hit confirmation

Advanced Features

• Advantage/Disadvantage rolls
• Multiple dice for group checks
• Statistical tracking
• Critical roll highlighting

Why Choose Our D20 Dice Roller

Realistic Dice Experience

• Smooth gathering and scattering animation effects
• Natural random dice distribution after rolling
• Dynamic rotation and movement animations
• Interactive dice placement and removal
• Fluid multi-dice rolling synchronization

Enhanced Fullscreen Mode

• Larger display area for better visibility
• Responsive layout for all screen sizes
• Clear result visualization
• Detailed roll history tracking
• Perfect for team games and educational use

Core Features

• True random number generation
• Support for multiple D20 dice rolls
• Clear visualization of results
• Roll history tracking
• Mobile-friendly interface
• No registration required

Pro Tips: D20 Dice Rolling

For the most immersive experience, try our fullscreen mode on desktop devices. The enhanced visuals and expanded rolling area create a more engaging and realistic dice rolling experience. Use the roll history feature to analyze your results and track patterns over time.

Number Distinction:To avoid confusion, we've added underlines to numbers that might be misread when rotated(6/9)to help ensure accurate reading of your dice rolls.