A d4 is a four-sided, tetrahedron-shaped die that gives a result from 1 to 4. Each result has a 25% chance and the average is 2.5. Press “Roll Dice” to roll one or more d4.
Quick facts
- Shape
- Regular tetrahedron (Platonic solid)
- Result range
- 1 – 4
- Average
- 2.5
- Chance of each result
- 1/4 = 25%
- Typical use
- D&D dagger damage (1d4), Magic Missile (1d4+1)
Where is the d4 used?
In Dungeons & Dragons and other tabletop RPGs the d4 handles small damage and healing values: a dagger deals 1d4, each Magic Missile dart deals 1d4 + 1, and a Potion of Healing restores 2d4 + 2 hit points.
Physical d4s are famous for barely rolling and for hurting when stepped on — an online d4 avoids both.
How do I roll?
- The dice roll automatically when the page opens. To roll again, press “Roll Dice”, tap the dice or hit the space bar.
- On a phone with “Shake to roll” enabled, just shake your device.
- Pick a die type from “Dice Types” in the top menu or the d4 – d20 tabs: roll 1–4 of a d4, d8, d10, d12 or d20, or 1–6 six-sided dice.
- Every roll is saved to “Roll History” with its total, and the “Stats” tab shows how often each face has come up.
Is Zar Salla a fair dice roller?
Yes. Results come from your browser’s cryptographic random number generator (Web Crypto API, crypto.getRandomValues), and rejection sampling gives every face exactly the same probability. Nothing is sent to a server, nothing is decided in advance and no roll depends on the previous one.
Just like real dice, short streaks of the same number are normal. As you roll more, each face’s share gets closer to the expected value — you can watch this yourself in the “Stats” tab.
How many d4 do you want to roll?
Frequently asked questions
How do you read a d4?
Depending on the model, the result is the number at the top point or along the bottom edge. Zar Salla simply shows the number.
What is the average roll of a d4?
(1+2+3+4)/4 = 2.5.
What does 2d4 mean?
Roll two four-sided dice and add them; the result is 2 to 8.
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