Press “Roll Dice” to roll two eight-sided dice at once; the total is between 2 and 16. The average total is 9 and the most likely total is 9 (12.5%).
Quick facts
- Dice
- 2 eight-sided dice (2d8)
- Total range
- 2 – 16
- Average total
- 9
- Most likely total
- 9 (8/64 ≈ 12.5%)
- All the same
- 8/64 ≈ 12.5%
- Highest total (16)
- 1/64 ≈ 1.56%
- Randomness
- Cryptographic, every face equally likely
2d8 total distribution
Two d8 have 64 equally likely outcomes. The extreme totals (2 and 16) can each be made only one way, while 9 can be made 8 ways — so the total clusters in the middle and extreme results are rare.
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 d8 do you want to roll?
Frequently asked questions
What is the average of 2d8?
Each d8 averages 4.5, so 2 of them average 9.
What is the most likely total on 2d8?
9, with 8 of 64 outcomes (12.5%).
What are the odds that all two d8 match?
8/64 = 12.5%.
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