Tech
Dice Roller (d4-d100)
Roll any number of dice with sides from d4 to d100. Cryptographically random results perfect for tabletop games.
Pick your dice
Click Roll to start.
Frequently Asked Questions about the Dice Roller (d4-d100)
What dice types are supported?
The calculator supports d4, d6, d8, d10, d12, d20, and d100, the full standard tabletop set. You can roll 1 to 100 dice at a time, and any combination of count and die type is valid.
Is the dice roll random and fair?
Yes. The calculator uses the Web Crypto API with unbiased rejection sampling, which removes the modulo bias that simpler random methods have, so each face has an exactly equal probability of landing. It falls back to Math.random() only if the browser does not expose the Crypto API, which is rare in any modern browser.
How do I roll 4d6 (4 six-sided dice)?
Set the count to 4 and select d6, then hit Roll. The result shows every individual die face plus the total, so you see both the breakdown and the sum in one shot.
Can I roll for advantage (2d20 keep higher)?
Roll 2d20 and read the two individual results, then take the higher one yourself. The calculator shows every roll separately, so spotting the higher number takes one glance. It does not auto-apply D&D-style advantage or disadvantage mechanics.
Why does the total matter more than the individual rolls?
Most tabletop systems (D&D 5e, Pathfinder, GURPS) compare the sum of your dice against a target number or difficulty class. Seeing the total lets you know whether you hit, succeed, or fail without adding in your head.