Math & Scientific
Dice Roller
Dice Roller is a browser-based calculator tool on CalcToolsBase. Free, browser-based Dice Roller with instant, clearly-labelled results. No signup, no uploads. To use it, enter your values and view the result directly in your browser — no signup and nothing to install.
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
The Dice Roller is a browser-based tool that helps you get an unbiased random outcome. You enter the number of sides and how many dice, and it applies a fair random pick to return a random result each time. Everything runs locally — no sign-up, no uploads, nothing stored — so it stays fast and private.
Made for anyone who needs to decide or pick fairly, it gives a random result each time from the number of sides and how many dice in one step — clearly laid out, free to use, and computed entirely on your device.
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
Dice for games and quick decisions
Dice for icebreakers and group prompts
Dice in raffles and giveaways
Dice when a real coin or die isn't handy
Dice for picking a random winner
Dice 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.