Ability Scores and Modifiers
Score Modifier 1 -5 2-3 -4 4-5 -3 6-7 -2 8-9 -1 10-11 +0 12-13 +1 14-15 +2 16-17 +3 18-19 +4 20-21 +5 22-23 +6 24-25 +7 26-27 +8 28-29 +9 30 +10 To determine a…
Score Modifier
1 -5
2-3 -4
4-5 -3
6-7 -2
8-9 -1
10-11 +0
12-13 +1
14-15 +2
16-17 +3
18-19 +4
20-21 +5
22-23 +6
24-25 +7
26-27 +8
28-29 +9
30 +10
To determine an ability modifier without consulting the table, subtract 10 from the ability score and then divide the total by 2 (round down).
Because ability modifiers affect almost every attack roll, ability check, and saving throw, ability modifiers come up in play more often than their associated scores.
Source and licence
From System Reference Document 5.1.
Licence: SRD (CC BY 4.0).
This work includes material taken from the System Reference Document 5.1 ("SRD 5.1") by Wizards of the Coast LLC and available at dnd.wizards.com/resources/systems-reference-document. The SRD 5.1 is licensed under the Creative Commons Attribution 4.0 International License available at creativecommons.org/licenses/by/4.0/legalcode.
This work includes material from the System Reference Document 5.2.1 ("SRD 5.2.1") by Wizards of the Coast LLC, available at dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License, available at creativecommons.org/licenses/by/4.0/legalcode.