Press “Roll Dice” to roll four ten-sided dice at once; the total is between 4 and 40. The average total is 22 and the most likely total is 22 (6.7%).
Quick facts
- Dice
- 4 ten-sided dice (4d10)
- Total range
- 4 – 40
- Average total
- 22
- Most likely total
- 22 (670/10,000 ≈ 6.7%)
- All the same
- 10/10,000 ≈ 0.1%
- Highest total (40)
- 1/10,000 ≈ 0.01%
- Randomness
- Cryptographic, every face equally likely
4d10 total distribution
Four d10 have 10,000 equally likely outcomes. The extreme totals (4 and 40) can each be made only one way, while 22 can be made 670 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 d10 do you want to roll?
Frequently asked questions
What is the average of 4d10?
Each d10 averages 5.5, so 4 of them average 22.
What is the most likely total on 4d10?
22, with 670 of 10,000 outcomes (6.7%).
What are the odds that all four d10 match?
10/10,000 = 0.1%.
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