Hit Points Calculator — D&D 5e HP
Work out your D&D 5e character's hit points: pick your class (hit die), enter your level and Constitution modifier, and get the average HP (using the official 5e average method), plus the maximum if you rolled perfectly and the minimum if you rolled ones every time.
Hit die
Level 5 d8 character — max at level 1, then average per level
- 1
Level 1 HP
8 + 2 = 10 - 2
Avg HP per level
⌊8 ÷ 2⌋ + 1 + 2 = 7D&D 5e average method: floor(die ÷ 2) + 1 + CON modifier. - 3
Total HP
10 + (5 − 1) × 7 = 38
How does this calculator work?
HP = (die + CON mod) at level 1, then add (⌊die/2⌋ + 1 + CON mod) each subsequent level. For a level 5 Fighter (d10) with +2 CON: level 1 = 12 HP, then +8 each level → 12 + 4×8 = 44 average HP. Maximum assumes all max rolls; minimum assumes all 1s.
Formula
How this is calculated
In D&D 5th Edition, a character's maximum hit points are determined by their class's hit die, their character level, and their Constitution modifier. At 1st level you always take the maximum value of the hit die plus your Constitution modifier (e.g. 10 + 2 = 12 for a Fighter with +2 CON). At each subsequent level you either roll the hit die or take the official average: the average roll per die is ⌊die/2⌋ + 1 (so 4 for a d6, 5 for a d8, 6 for a d10, 7 for a d12). Your Constitution modifier is added at every level.
The D&D 5e Player's Handbook (2014) defines the average as this floor-plus-one formula rather than a strict statistical mean; for even-sided dice they are the same number. The minimum assumes you rolled a natural 1 on every level-up die roll (before CON modifier), and the maximum assumes you rolled the die maximum every time.
Note: this calculator does not account for Tough feat (+2 HP per level), temporary hit points, or class features that modify HP (e.g. Draconic Resilience). All values use 2014 D&D 5e rules; the 2024 revised rules follow the same formula.
Frequently asked questions
Taking the average (⌊die/2⌋ + 1) is mathematically safer — it guarantees the mean result every time. Rolling keeps the game exciting but can leave you with fewer HP than the average if you are unlucky. Most players at organised play take the average for consistency.
Your CON modifier = ⌊(CON score − 10) / 2⌋. Common values: CON 10–11 → +0, 12–13 → +1, 14–15 → +2, 16–17 → +3, 18–19 → +4, 20 → +5. Enter a negative modifier for a CON score below 10.
The Tough feat adds 2 HP per character level (including retroactively for past levels). Simply add 2 × level to the result displayed here — the calculator does not include feat bonuses.
Also known as
TG we-Calculate Editorial Team. (2026). Hit Points Calculator — D&D 5e HP [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/hit-points-calculator
TG we-Calculate Editorial Team. "Hit Points Calculator — D&D 5e HP." TG we-Calculate. 2026. https://we-calculate.com/calculator/hit-points-calculator.
TG we-Calculate Editorial Team, "Hit Points Calculator — D&D 5e HP," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/hit-points-calculator
@misc{wecalculate_hit_points_calculator, title = {Hit Points Calculator — D&D 5e HP}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/hit-points-calculator}}, year = {2026}, note = {TG we-Calculate} }
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