Are these dice rolls fair?

Yes. Rolls use crypto.getRandomValues() — the browser's cryptographically secure random source — with rejection sampling to remove modulo bias. Every face has exactly the same probability, which is more than can be said for many physical dice.

Which dice types are supported?

The standard tabletop set: d4, d6, d8, d10, d12, d20 and d100 — everything you need for D&D, Pathfinder, and most board games. You can roll up to 20 dice of the same type at once.

Can I use this for D&D ability checks?

Yes — select d20 and roll. For advantage/disadvantage, roll 2 × d20 and take the higher/lower value from the breakdown. For ability scores, roll 4 × d6 and drop the lowest.

Does the roller remember my rolls?

The history shows your last 15 rolls for the current session. Nothing is stored permanently and nothing leaves your browser — refresh the page and the history is gone.

Why an online dice roller instead of real dice?

Speed (20 dice in one click), fairness (physical dice are often slightly biased by manufacturing), and practicality when playing remotely. For in-person play, real dice are obviously more fun — we won't pretend otherwise.

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Dice Roller — Free Online Tool

Roll d4 to d100 — crypto-fair virtual dice for D&D and board games

Free online dice roller: d4, d6, d8, d10, d12, d20, d100. Roll up to 20 dice with totals + breakdown. Cryptographically fair — better than biased physical dice.

Number of dice

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Pick a die and roll

History

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Learn more

Key Takeaways

Dice Roller is a free, browser-based calculator tool — roll d4 to d100 — crypto-fair virtual dice for d&d and board games.
No signup, no downloads, no file uploads — your data stays on your device.
Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Dice Roller

Open the tool: Launch Dice Roller on Toololis — no account or download needed.
Enter your data: Paste text, enter values, or select a file directly in your browser.
Get instant results: Everything is processed locally — results appear immediately.
Copy or download: Save your output or share it. Bookmark for quick access next time.

Dice Roller — Quick Facts

Price: Free — no limits, no watermarks, no paywalls
Privacy: 100% browser-based — no data is sent to any server
Platform: Any modern browser on desktop, tablet, or mobile
Category: Calculator Tools on Toololis
Offline: Works offline after first visit (Progressive Web App)

Feature	Details
Tool	Dice Roller
Category	Calculator
Signup Required	No
File Upload	None — processed in browser
Mobile Support	Fully responsive
Cost	Free forever

Why Use Dice Roller?

You should try Dice Roller for a quick, private way to roll d4 to d100 — crypto-fair virtual dice for d&d and board games. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.

Key Takeaways

How to Use Dice Roller

Dice Roller — Quick Facts

Why Use Dice Roller?

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