Creating a compelling D&D 5e character starts with six numbers: Strength, Dexterity, Constitution, Intelligence, Wisdom, and Charisma. These ability scores underpin every roll your character makes — attack rolls, skill checks, saving throws, spell save DCs, initiative, and hit-point totals all trace back to one of these six values. Getting them right during character creation sets the tone for your entire campaign.
How it works
The calculator supports all four official ability score generation methods from the Player’s Handbook:
Standard Array assigns the set (15, 14, 13, 12, 10, 8) — one value per ability. It is the fastest method and produces a balanced, tested spread.
Point Buy starts every ability at 8 and gives you 27 points to spend. Scores 8–13 cost 1 point each; 14 costs 2 extra points (7 total from 8); 15 costs 2 more on top of that (9 total). The non-linear cost makes hyper-specialisation expensive and rewards versatility.
Dice Roll (4d6 drop lowest) simulates the classic rolling method. Four d6 are rolled; the lowest die is discarded and the remaining three are summed. This is repeated six times, one per ability. The expected value per roll is approximately 12.2, but variance is high — you might land a 17 or a 4.
Manual entry lets you type any value from 1 to 30, useful for high-level play, monsters converted to PCs, or testing build theory.
Modifier formula
Every ability score produces a modifier using the formula:
modifier = floor((score - 10) / 2)
A score of 10 or 11 is “average” and gives +0. Each two-point step above 10 adds +1 (score 12 → +1, 14 → +2, 16 → +3, 18 → +4, 20 → +5). Below 10 the modifier is negative (score 8 → -1, 6 → -2). The modifier is what you actually add to dice rolls — the raw score is rarely used directly outside of a few specific checks such as carrying capacity (15 * STR score in pounds) and passive Perception (10 + WIS modifier + proficiency if applicable).
Worked example
A Fighter at level 5 with the Standard Array assigned as STR 15, DEX 14, CON 13, INT 8, WIS 12, CHA 10:
| Ability | Score | Modifier | Save (prof) | Save (no prof) |
|---|---|---|---|---|
| STR | 15 | +2 | +5 | +2 |
| DEX | 14 | +2 | +5 | +2 |
| CON | 13 | +1 | +4 | +1 |
| INT | 8 | -1 | +2 | -1 |
| WIS | 12 | +1 | +4 | +1 |
| CHA | 10 | 0 | +3 | 0 |
At level 5 the proficiency bonus is +3. A Fighter is proficient in STR and CON saving throws, so those saves add +3 to the base modifier.
XP encounter thresholds
The tool also shows the per-character XP thresholds for Easy, Medium, Hard, and Deadly encounters at your current level, sourced from the Dungeon Master’s Guide (p.82). A typical 4-player party of level 5 characters has a Deadly threshold of 4 * 1100 = 4,400 total XP — any encounter whose adjusted monster XP exceeds that number risks lethal outcomes.
Ability score improvements (ASI)
Most classes gain an Ability Score Improvement at levels 4, 8, 12, 16, and 19. Each ASI lets you increase one score by 2 or two scores by 1 each (to a maximum of 20 without magical enhancement). Alternatively you may take a Feat in place of the stat bump. The calculator shows your next ASI level as a reminder.