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Miss chance

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Several effects each provide a chance (tested by a d100 roll) that a physical attack (melee/ranged) will miss. While each miss chance is actually tested separately, you can calculate a total effective miss chance to help evaluate your squishyness. The following game mechanics grant you a miss chance:

For other ways to increase your survivability versus physical attacks, see:

In general, trying to increase any one Damage Mitigation factor (eg extreme AC or Hit Points) at the expense of the others is unwise, try to increase all Damage Mitigation factors.

Total Effective Miss Chance[edit]

For PC's a common source of Concealment can be the Displacement spell, a Blur effect or blindness inflicted on the target. An Incorporeal effect can come from an item with the Ghostly property or from some Class Enhancements and Epic Destinies.


The formula for calculating the Total Effective Miss chance is:
D = (100-Dodge)/100
C = (100-Concealment)/100
I = (100-Incorporeal)/100
∴ Miss chance % = (1-(D*C*I))*100


This table shows the Total Effective Miss Chance for combinations of Dodge, Concealment & Incorporeal.


Miss chance Dodge Concealment Incorporeal
0.00% 0%
5.00% 5%
10.00% 10%
15.00% 15%
20.00% 20%
25.00% 25%
10.00% 0% 10%
14.50% 5% 10%
19.00% 10% 10%
23.50% 15% 10%
28.00% 20% 10%
32.50% 25% 10%
10.00% 0% 10%
14.50% 5% 10%
19.00% 10% 10%
23.50% 15% 10%
28.00% 20% 10%
32.50% 25% 10%
19.00% 0% 10% 10%
23.05% 5% 10% 10%
27.10% 10% 10% 10%
31.15% 15% 10% 10%
35.20% 20% 10% 10%
39.25% 25% 10% 10%
20.00% 0% 20%
24.00% 5% 20%
28.00% 10% 20%
32.00% 15% 20%
36.00% 20% 20%
40.00% 25% 20%
28.00% 0% 20% 10%
31.60% 5% 20% 10%
35.20% 10% 20% 10%
38.80% 15% 20% 10%
42.40% 20% 20% 10%
46.00% 25% 20% 10%
25.00% 0% 25%
28.75% 5% 25%
32.50% 10% 25%
36.25% 15% 25%
40.00% 20% 25%
43.75% 25% 25%
32.50% 0% 25% 10%
35.88% 5% 25% 10%
39.25% 10% 25% 10%
42.63% 15% 25% 10%
46.00% 20% 25% 10%
49.38% 25% 25% 10%
50.00% 0% 50%
52.50% 5% 50%
55.00% 10% 50%
57.50% 15% 50%
60.00% 20% 50%
62.50% 25% 50%
55.00% 0% 50% 10%
57.25% 5% 50% 10%
59.50% 10% 50% 10%
61.75% 15% 50% 10%
64.00% 20% 50% 10%
66.25% 25% 50% 10%
25.00% 0% 25%
28.75% 5% 25%
32.50% 10% 25%
36.25% 15% 25%
40.00% 20% 25%
43.75% 25% 25%
32.50% 0% 10% 25%
35.88% 5% 10% 25%
39.25% 10% 10% 25%
42.63% 15% 10% 25%
46.00% 20% 10% 25%
49.38% 25% 10% 25%
40.00% 0% 20% 25%
43.00% 5% 20% 25%
46.00% 10% 20% 25%
49.00% 15% 20% 25%
52.00% 20% 20% 25%
55.00% 25% 20% 25%
43.75% 0% 25% 25%
46.56% 5% 25% 25%
49.38% 10% 25% 25%
52.19% 15% 25% 25%
55.00% 20% 25% 25%
57.81% 25% 25% 25%
62.50% 0% 50% 25%
64.38% 5% 50% 25%
66.25% 10% 50% 25%
68.13% 15% 50% 25%
70.00% 20% 50% 25%
71.88% 25% 50% 25%