Dice Roller

How to use

1. Pick Sides — Choose d4, d6, d8, d10, d12, d20, or d100 — standard tabletop and RPG dice.
2. Pick Quantity — Roll 1–100 dice at once. Useful for damage rolls and stat generation.
3. Press Roll — Each die uses cryptographic randomness with rejection sampling for unbiased values.

Free Online Dice Roller

Roll standard polyhedral dice — d4, d6, d8, d10, d12, d20, d100 — using cryptographically secure randomness. Perfect for tabletop RPGs like Dungeons & Dragons, board games, classroom probability, or any time you need an unbiased random number in a known range.

Cryptographic Randomness

Unlike Math.random(), this tool uses the Web Crypto API with rejection sampling. That eliminates the small modulo bias that affects naive random implementations — every face has exactly the same probability.

Common Uses

• D&D and Pathfinder players who forgot their dice bag
• Game masters generating ability scores or loot tables
• Board game replacements for lost dice
• Teachers demonstrating probability distributions

Privacy

All rolls happen locally. Nothing is logged or transmitted.

Related: Coin Flipper, Random Number Generator.

Frequently asked questions

Are the rolls fair?

Yes. We use crypto.getRandomValues with rejection sampling, so every face has exactly equal probability. No modulo bias.

Which dice are supported?

d4, d6, d8, d10, d12, d20, and d100 (percentile). Perfect for D&D, Pathfinder, Warhammer, and board games.

Can I roll many dice at once?

Yes. Roll up to 100 dice in one click and see individual results plus the total sum.

Does this work offline?

Yes. Everything runs in-browser using the Web Crypto API. No network required after page load.

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