Dice Roller

How it works

Choose how many sides your die has and how many dice to roll, then click Roll. Each die uses crypto.getRandomValues with rejection sampling for a fair, uniform result. The output lists every individual roll and the total sum.

Benefits

• Fair, unbiased rolls via cryptographic randomness
• Supports every standard polyhedral die from d4 to d100
• Shows individual results and the running sum
• No account, app install, or physical dice required

Use cases

• Roll ability checks and damage for tabletop RPG sessions
• Settle board game disputes with a fair virtual die
• Teach probability concepts with repeated dice rolls
• Make quick random decisions between a handful of options

Best practices

• Match the die type to your game's rulebook (e.g., d20 for D&D checks)
• Roll multiple dice together when a rule calls for combined dice
• Re-roll if your browser tab lost focus mid-interaction
• Use the sum for damage or scoring, individual rolls for advantage rules

Common mistakes

• Forgetting to update the die type before rolling for a different check
• Assuming the sum applies when a rule needs the highest single die
• Rolling one die at a time when a rule specifies multiple dice
• Confusing d100 percentile rolls with standard d10 rolls

Privacy

Dice rolls are generated locally with crypto.getRandomValues and never leave your browser. ToolHub does not receive, log, or store your rolls.