Can I roll different types of dice at the same time?

The tool allows you to configure one die type per roll. To roll mixed dice (e.g., 1d6 + 1d8), perform separate rolls and add the results, or use the custom notation input if available.

Are the virtual dice fair?

Yes. Each outcome is generated using a cryptographically secure random number generator, ensuring every face has an exactly equal probability of appearing.

Can I use this for Dungeons & Dragons?

Absolutely. The tool supports all standard D&D dice—d4, d6, d8, d10, d12, and d20—making it a convenient digital replacement for physical dice during sessions.

How to Roll Dice Online

4 min readRandom

From classic board games to tabletop RPGs, dice are a cornerstone of games and probability. Toolin's Dice Roller lets you simulate rolls for any type of die—from a standard six-sided die to a d20 or even custom-sided dice—right in your browser. This guide covers how to use the tool and explains the probability behind common dice configurations.

Quick Steps

1
Open the Dice Roller
Navigate to Toolin's Dice Roller in your browser.
2
Pick a die type
Select d6, d20, or any other preset—or enter a custom number of sides.
3
Set the number of dice
Choose how many dice to roll simultaneously (e.g., 2 for 2d6).
4
Click Roll
Press Roll to generate results. Individual values and the total appear instantly.
5
Check roll history
Scroll through previous rolls to track results across your session.

Dice Roller

Roll standard RPG dice from D4 to D20

Open Tool

Supported Dice Types

d4 – Four-sided die, common in tabletop RPGs for damage rolls.
d6 – The classic six-sided die used in most board games.
d8 – Eight-sided die used in various RPG systems.
d10 – Ten-sided die, often used for percentile rolls in pairs.
d12 – Twelve-sided die found in games like Dungeons & Dragons.
d20 – Twenty-sided die, the iconic die for attack and skill checks in D&D.
Custom – Enter any number of sides for specialized games or experiments.

How to Use the Dice Roller

Open the Dice Roller

Go to Toolin's Dice Roller. The tool is free and works on desktop and mobile browsers.

Select the die type

Choose from preset options like d6 or d20, or enter a custom number of sides.

Set the number of dice

Specify how many dice you want to roll at once. For example, rolling 2d6 simulates two six-sided dice.

Click Roll

Press the Roll button. The individual results for each die and the total sum appear on screen.

Review the roll history

Previous rolls are logged so you can reference past results during a game session.

Understanding Dice Probability

Each face on a fair die has an equal probability of landing face-up. For a d6, that is 1 in 6 (about 16.7%) per face. When rolling multiple dice, the probabilities shift: rolling 2d6 produces a bell curve where 7 is the most common sum and 2 or 12 are the rarest. Understanding these distributions helps tabletop gamers evaluate risk and helps students grasp discrete probability distributions in a hands-on way.

Dice Notation Cheat Sheet

1d6   → Roll one six-sided die
2d6   → Roll two six-sided dice, sum the results
1d20  → Roll one twenty-sided die
3d8+5 → Roll three eight-sided dice, add 5 to the total
4d6kh3 → Roll four d6, keep the highest three (ability scores)

Try Dice Roller Now — Free, No Sign-up

Frequently Asked Questions

Can I roll different types of dice at the same time?: The tool allows you to configure one die type per roll. To roll mixed dice (e.g., 1d6 + 1d8), perform separate rolls and add the results, or use the custom notation input if available.
Are the virtual dice fair?: Yes. Each outcome is generated using a cryptographically secure random number generator, ensuring every face has an exactly equal probability of appearing.
Can I use this for Dungeons & Dragons?: Absolutely. The tool supports all standard D&D dice—d4, d6, d8, d10, d12, and d20—making it a convenient digital replacement for physical dice during sessions.