Math & Scientific
Dice Roller
Dice: dice Roller simulates dice rolls with the browser's pseudo-random generator, each face equally likely and independent. Worked through below with real figures, and the calculator repeats the working on your own inputs — free, on-device, instant.
Give Dice Roller the number of sides and how many dice and it returns a random result each time straight away. Built to get an unbiased random outcome, it runs entirely on your device.
About this calculator
It is a light-hearted toy — fine for a laugh or a quick what-if, not for decisions that matter. The governing relationship: Dice Roller simulates dice rolls with the browser's pseudo-random generator, each face equally likely and independent. See it on real numbers: A standard die is equally likely to show 1–6, so the long-run average roll is (1+2+3+4+5+6) ÷ 6 = 3.5 . The calculator above applies the same steps to whatever you enter — computed locally, nothing sent anywhere.
How to use
- Enter the number of sides on each die (6 for a standard die).
- Enter how many dice to roll.
- Press Calculate to roll.
- Read each roll, the total, and the average.
Why use Dice Roller
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Accurate
Uses fair pseudo-random generation for casual use, not security or official lotteries.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Honest disclaimers wherever browser limits or regional rules apply.
Common uses
Use it for games and quick decisions
Use it for icebreakers and group prompts
Dice in raffles and giveaways
Use it when a real coin or die isn't handy
Use it for picking a random winner
Use it when you just can't decide
Technical notes
Dice Roller simulates dice rolls with the browser's pseudo-random generator, each face equally likely and independent.
Each result is independent and uses the browser's built-in randomness, so don't rely on it where secure or certified randomness is required.
Nothing you type is uploaded — the calculation happens entirely on your device.
FAQ
Can I roll dice with more than six sides?
Yes. Set the number of sides to anything from 2 upward, so you can roll a 20-sided die or any other die.
Are the rolls fair?
Each face is equally likely, using your browser's pseudo-random generator. It is suitable for games, not for gambling or security.
How many dice can I roll at once?
You can roll up to 1,000 dice in a single throw, and the sum and average are calculated for you.
Does the Dice Roller send my data to a server?
No. The Dice Roller runs entirely in your browser, so nothing you enter is uploaded, stored, or shared.
Worked example
A standard die is equally likely to show 1–6, so the long-run average roll is (1+2+3+4+5+6) ÷ 6 = 3.5.