D&D Character Calculator
Work out hit points, proficiency bonus, armour class and initiative for a D&D 5e character.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
A compact single-class 5e estimate using average hit-point gains. Enter the relevant ability modifiers; spell save DC uses the modifier you choose, and passive Perception excludes proficiency and other bonuses.
Worked example
calculated with the default values below
Character level 5 · Class hit die d10 (fighter, paladin) · Constitution modifier 2 · Dexterity modifier 3 · Armour bonus (worn armour) 4 · Carrying a shield No · Spellcasting ability modifier 2 · Wisdom modifier 2 Hit points 44 · Proficiency bonus 3 · Armour class 17 · Initiative 3 · Spell save DC (chosen ability) 13 · Passive Perception (before proficiency) 12 · Hit dice 5d10
Disclaimer
These calculators give general estimates for information and entertainment. Platform algorithms, metrics and definitions change without notice, and none of these results are official figures from the platforms named.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
HP = d + C + (L − 1)(int(d ÷ 2) + 1 + C); P = int((L − 1) ÷ 4) + 2; AC = 10 + X + A + S
- L
- character level, 1–20
- d
- hit die
- C
- constitution modifier
- X
- dexterity modifier
- A
- armor bonus
- S
- shield bonus, 2 or 0
- HP
- hit points
- P
- proficiency bonus
- AC
- armour class
HP uses average hit-die rolls; spell save DC = 8 + proficiency bonus + entered spell ability modifier; passive Perception = 10 + entered Wisdom modifier. Other features are not modeled.
Frequently asked questions
How are spell save DC and passive Perception calculated?
Spell save DC is 8 + proficiency bonus + the spell ability modifier you enter. Passive Perception is 10 + the Wisdom modifier entered. These are simplified character-sheet calculations and do not account for every class feature, proficiency, feat, or effect.