Roll 3d6 Online
Roll three six-sided dice at once with realistic 3D physics. The 3d6 roll is fundamental to many tabletop RPG systems — from classic D&D ability score generation to GURPS skill checks.
3d6 Probability Curve
Rolling 3d6 produces a total between 3 and 18 with a strong bell curve centered around 10-11. The most likely total is 10 or 11 (each with a 12.5% chance), while 3 and 18 are extremely rare (0.46% each). This curve is what makes ability scores cluster around average values.
RPG Systems Using 3d6
Many RPG systems use 3d6 as their core mechanic: GURPS uses 3d6 for all skill checks (roll under your skill), classic D&D used 3d6 straight for ability scores, and Hero System uses 3d6 for most rolls. The bell curve creates more predictable outcomes compared to a flat D20 roll.
Frequently Asked Questions
What is the average of 3d6?
The average total of 3d6 is 10.5. About 48% of all rolls will fall between 9 and 12, making mid-range results very common.
How is 3d6 different from 1d20?
A D20 has a flat distribution (5% chance per number), while 3d6 has a bell curve. This means 3d6 gives more consistent, average results, while a D20 is more swingy with equal chances of extreme and moderate results.