D&D 5e HP Calculator
Hit points are the number that stands between your character and unconsciousness. This free D&D 5e HP calculator works out hit points for all 12 classes from level 1–20 — with your Constitution modifier, average or rolled hit dice, the Tough feat, Hill Dwarf resilience, and full multiclass support. Everything runs 100% in your browser.
Level-by-level breakdown
| Level | Class | Hit die result | + CON | HP gained | Running total |
|---|
Uses standard 5e rules (SRD): level 1 = max hit die + CON; later levels = average (die ÷ 2, rounded up) or your rolls + CON. 100% client-side — nothing is uploaded.
How HP works in D&D 5e
Your hit points measure how much punishment your character can take. They come from two ingredients: your class\'s hit die (a d6 for frail Wizards, a d12 for Barbarians) and your Constitution modifier.
- Level 1: you get the maximum of your hit die, plus CON. A 1st-level Fighter with 14 CON (+2) starts with 10 + 2 = 12 HP. No roll, no average — max, always.
- Each level after: roll the hit die or take the fixed average, then add CON again. The fixed averages are d6 → 4, d8 → 5, d10 → 6, d12 → 7.
- CON modifier = (CON score − 10) ÷ 2, rounded down. 14–15 CON is +2, 16–17 is +3, 8–9 is −1.
Separate from hit points, your hit dice are a healing pool: one die per level. On a short rest you can spend hit dice to recover HP (roll + CON each). A long rest restores all HP and half your spent hit dice.
Class hit dice
| Hit die | Classes | Avg/level |
|---|---|---|
| d12 | Barbarian | 7 |
| d10 | Fighter, Paladin, Ranger | 6 |
| d8 | Bard, Cleric, Druid, Monk, Rogue, Warlock | 5 |
| d6 | Sorcerer, Wizard | 4 |
Tough classes get bigger dice; it\'s the game\'s way of saying Barbarians are built to be hit. (Averages shown are before adding your CON modifier.)
Feats and features that add HP
- Tough feat: +2 HP per character level, applied retroactively — the single biggest HP boost any character can take.
- Hill Dwarf (Dwarven Toughness): +1 HP per level, also retroactive. Stacks with Tough.
- Aid spell: temporarily raises current and maximum HP by 5 while it lasts — not permanent, so this calculator doesn\'t include it.
Because Tough and Dwarven Toughness apply per level including levels you already have, taking them later still pays out in full — the calculator handles that automatically.
Multiclass HP, explained
Multiclassing splits your levels between two classes, and HP follows a simple rule: the max-die-at-level-1 bonus applies once, from your starting class. After that, each new level adds whatever that level\'s class gives — average or roll, plus CON. A Fighter 3 / Wizard 2 with +2 CON taking averages: level 1 gives 10+2, Fighter levels 2–3 give 6+2 each, Wizard levels 4–5 give 4+2 each = 38 HP, with a mixed hit-dice pool of 3d10 + 2d8 for short rests. Enter your split above and the calculator builds the exact breakdown.
Frequently asked questions
- How is HP calculated in D&D 5e?
- At 1st level, you get your hit die's maximum roll plus your Constitution modifier. Each level after that, you either roll the hit die or take its fixed average (the die size halved, rounded up) and add your CON modifier again. So a 3rd-level Fighter (d10) with +2 CON taking averages has 10+2, then 6+2, then 6+2 = 26 HP.
- What is the average HP per level for each hit die?
- Using the standard fixed values: d6 → 4, d8 → 5, d10 → 6, d12 → 7 per level after 1st (each plus your CON modifier). These come from the rule that the average is half the die size rounded up — half of 10 is 5, rounded up to 6.
- How does the Tough feat affect HP?
- The Tough feat adds +2 hit points per character level — and it applies retroactively, so taking it at 8th level immediately adds 16 HP. This calculator adds 2 × your total level when the box is checked.
- How does multiclassing work for HP?
- You take the maximum hit die plus CON only once, at character level 1, from your starting class. Every level after that — in either class — adds that level's class average (or roll) plus CON. Your hit dice pool becomes mixed, e.g. a Fighter 3 / Rogue 2 has 3d10 + 2d8 of hit dice to spend on short rests.
- Do I add my CON modifier at every level?
- Yes — every single level, including 1st, adds your Constitution modifier to the hit die result. A negative CON modifier reduces HP each level too, though 5e rules mean each level still grants a minimum of 1 hit point.
- What are hit dice used for?
- Hit dice are a healing resource. During a short rest you can spend hit dice — roll them, add your CON modifier to each, and regain that many HP. You regain half your total hit dice (rounded up) after a long rest, and a long rest restores all your HP.
- Average vs rolled HP — which should I use?
- The Player's Handbook lets you choose per level-up: roll the die or take the fixed average. Average is predictable and slightly above the true mathematical average of the die; rolling can spike high or low. Many tables pick one method for the whole campaign — ask your DM which your table uses.