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Dice Roller & Coin Flip

Roll dice online (d4–d100, up to 20 dice) and flip coins – with true randomness and history

Randomness comes from crypto.getRandomValues (cryptographically secure, without modulo bias).

Fair and Secure Randomness

Our Dice Roller and Coin Flip tool utilizes the cryptographically secure crypto.getRandomValues method to ensure every result is truly random and free from modulo bias. Whether you are rolling a single d20 for a tabletop RPG or flipping a coin to make a quick decision, the results are generated locally in your browser. This ensures that every roll and flip remains fair, unpredictable, and consistent for all users across all devices.

Versatile Tools for Every Need

This tool is designed for a wide range of applications, from tabletop gaming and board game nights to making random choices in daily life. You can roll various dice types ranging from d4 to d100 and roll up to 20 dice simultaneously with a single click. The coin flip feature provides an instant heads or tails result, while the history log allows you to keep track of previous outcomes for your records.

Frequently asked questions

How random is the dice roller?

The tool uses the crypto.getRandomValues API, which provides high-quality randomness suitable for cryptographic use. Unlike standard math functions that can suffer from modulo bias, our system ensures every number in a range has an equal chance of appearing, making it perfect for gaming and fair decision-making.

Can I roll multiple dice at once?

Yes, you can roll up to 20 dice simultaneously. You can customize the type of die from d4 to d100 and the quantity before clicking the roll button. The tool will automatically calculate the total sum for all rolled dice, making it convenient for complex game mechanics.

Is my data safe when using this tool?

Your privacy is a priority. All calculations and random number generations happen directly in your web browser. No personal information is collected, and no data is sent to a server when you roll dice or flip a coin. The history of your rolls is also stored locally within your current session.

What types of dice are available?

You can choose from various die types ranging from d4 up to d100. This wide range allows players of tabletop RPGs like Dungeons and Dragons or any board game requiring specific dice counts and values to customize their experience easily without needing physical dice.