D&D 5e HP Calculator
Calculate your character’s maximum hit points from level 1 to 20 using fixed values, manual rolls, or a custom level gain.
How hit points work in D&D 5e
In Dungeons & Dragons 5e, hit points (HP) represent durability, luck, stamina, and your ability to avoid a truly lethal blow. Your max HP starts with your class hit die at level 1, then increases every level based on your class and Constitution modifier.
- Level 1: You take the full value of your class hit die.
- Levels 2+: You either roll your hit die or take the fixed average shown in your class table.
- Constitution modifier: Added every level, including level 1.
- Other bonuses: Feats and traits (like Tough or Hill Dwarf) can increase HP per level.
Base formula for max HP
A practical formula for most single-class characters is:
Max HP = (Level 1 hit die + CON mod + bonuses) + (Levels 2 to N × [base gain + CON mod + bonuses])
Where base gain is either fixed average, your rolled value, or a custom amount if your table uses a house rule.
Fixed average values in 5e
- d6 class: +4 each level after 1
- d8 class: +5 each level after 1
- d10 class: +6 each level after 1
- d12 class: +7 each level after 1
These are the values from the Player’s Handbook class progression tables.
How to use this hp calculator dnd 5e tool
- Choose your character level.
- Select your class hit die.
- Enter your Constitution score.
- Pick your HP method for levels 2+ (fixed, manual rolls, or custom).
- Add any extra HP per level from race/features and optionally enable Tough.
- Click Calculate HP to see your total and full level-by-level breakdown.
Quick examples
Example 1: Level 5 Fighter, CON 16, fixed average
Fighter uses d10. CON 16 gives +3 modifier.
- Level 1: 10 + 3 = 13
- Levels 2-5: (6 + 3) × 4 = 36
- Total HP = 49
Example 2: Level 5 Wizard, CON 14, fixed average
- Level 1: 6 + 2 = 8
- Levels 2-5: (4 + 2) × 4 = 24
- Total HP = 32
Example 3: Level 8 Barbarian, CON 18, Tough feat
- Hit die d12, CON +4, Tough +2 per level
- Level 1: 12 + 4 + 2 = 18
- Levels 2-8: (7 + 4 + 2) × 7 = 91
- Total HP = 109
Average vs rolling: which is better?
Take fixed average if you want consistency
Fixed gain is predictable and stable over long campaigns. It also avoids bad luck streaks from low rolls.
Roll if your table enjoys variance
Rolling can create memorable highs and lows. High rolls can outperform fixed gains, but low rolls can hurt survivability at key tiers.
Common HP modifiers players forget
- Tough feat: +2 max HP per level.
- Hill Dwarf: +1 max HP per level from Dwarven Toughness.
- Aid spell: increases current and max HP while active.
- Hero’s Feast: gives temporary max HP increase for 24 hours.
Remember that temporary hit points are not max HP; they are a separate buffer.
FAQ
Does negative Constitution reduce HP each level?
Yes. A negative CON modifier reduces gained HP, but level-up gain is typically treated with a minimum increase of 1 HP.
Does this calculator handle multiclassing?
This version is designed for one class at a time. For multiclass characters, calculate each class segment separately and add totals.
Can I use house rules?
Yes. Choose Custom Base Gain and enter your table’s per-level amount.
Final tip
Your HP total is one of the most important numbers on your character sheet. Recalculate whenever your Constitution changes, you gain a feat, or your DM applies long-term effects that alter maximum HP.