d100 tool

d100 Roller

Set the count, add a modifier, roll. Handles anything from a single d100 up to 100 of them at once.

Total

Tap to roll, or press R.

How many

Sides

Modifier

One d100 against two

Rolling more dice does not just raise the ceiling, it changes the shape. One d100 is flat. Two d100 bunches hard around 101.

Lowest: 2
Highest: 200
Average: 101.00
Most likely: 101
Chance of 101: 1.0%

2d100 distribution. Peak at 101 (1.0%). Ends at 2 and 200, each 0.010%.

Every total on 2d100

Too many outcomes to list. The chart above shows the shape.

Common d100 rolls

2d62–12, avg 7.0 3d63–18, avg 10.5 4d64–24, avg 14.0 5d65–30, avg 17.5 6d66–36, avg 21.0 8d68–48, avg 28.0 10d610–60, avg 35.0 2d82–16, avg 9.0 3d83–24, avg 13.5 4d84–32, avg 18.0 2d102–20, avg 11.0 3d103–30, avg 16.5 2d122–24, avg 13.0 3d123–36, avg 19.5 2d202–40, avg 21.0 4d6 drop lowest3–18, avg 12.2

Other dice

d41 to 4, average 2.5 d61 to 6, average 3.5 d81 to 8, average 4.5 d101 to 10, average 5.5 d121 to 12, average 6.5 d201 to 20, average 10.5