D4 dice roller

A 4-sided die, ready to roll

This page opens our dice roller already set to a 4-sided die, the d4. Click "Roll the dice", click the die itself or press the space bar: the die shakes for half a second and shows a number from 1 to 4. The result comes from your browser's cryptographic random number generator, every side has the same chance, and nothing is sent anywhere.

Need more than one? Enter up to 20 dice in "Number of dice" and the "Total" line adds them up. The "Quick picks" buttons (1d6, 1d20…) switch to another die in one click, and you can edit the "Number of sides" at any time. The "Latest rolls" list keeps your last 12 rolls.

What is a d4 used for?

A physical d4 is a tetrahedron: four triangular faces and no face pointing up. Depending on the model, you read the number at the top point or along the bottom edge.

• Tabletop role-playing games: small damage (a dagger, a minor spell), light healing, how many rounds an effect lasts.
• Picking one of 4 options: four restaurants, four movies, four chores to hand out.
• Splitting into 4 teams: each player rolls and joins team 1, 2, 3 or 4.
• Choosing a direction: 1 = north, 2 = east, 3 = south, 4 = west,.

The odds with a d4

Each side comes up with a probability of 1 in 4, or 25%. So rolling 3 or higher is a 50% chance. The average roll is (1 + 2 + 3 + 4) ÷ 4 = 2.5.

With two d4, there are 16 combinations. A total of 5 is the most common: 4 combinations out of 16, or 25%. Totals of 2 and 8 have only one combination each, or 6.25%.

Frequently asked questions

Can I add a bonus, like 1d4 + 2?

No, the tool does not add modifiers. Roll the die and add the bonus yourself.

Is the roll fair?

Yes. Each die is drawn separately and all four sides have exactly the same chance.