hp calculator 5e

D&D 5e Hit Point Calculator

Calculate total HP for your character using fixed values, expected rolls, or your manual roll totals.

Character Level

Class Hit Die

Constitution Score

HP Method for Level-Ups

Manual Roll Total (without CON)

Enter the sum of your hit die rolls from levels 2+.

Use max HP at level 1 (standard PC rule)

Include Tough feat (+2 HP per level)

Other Flat HP Bonus (optional)

Enter your stats and click Calculate HP.

How HP Works in D&D 5e

Hit points represent your character’s durability in combat: stamina, grit, luck, and the ability to avoid lethal blows. In 5e, HP scales mostly with your class hit die, your Constitution modifier, and your level.

At level 1, player characters usually take the maximum value of their class hit die. At each level after that, you either roll your hit die or take the fixed value listed for your class.

Base HP Formula

For most characters, a practical formula is:

Level 1 HP = max hit die + Constitution modifier
Each level after 1 = (fixed value or roll) + Constitution modifier
Total HP = sum of all level gains + feat/feature bonuses

If you have the Tough feat, add +2 HP per level. Certain class features, magic items, and boons can add additional flat HP.

Using This HP Calculator

This calculator is designed to be quick at the table and accurate enough for planning builds between sessions.

Set your level and hit die.
Enter your Constitution score (the calculator computes the modifier automatically).
Choose a method:
- Fixed Value: Uses standard fixed HP per level-up (d6=4, d8=5, d10=6, d12=7).
- Expected Roll Average: Uses the mathematical expected value for planning.
- Manual Rolls: Enter your own total roll results from leveling.
Enable Tough and add any flat bonus if relevant.

Example Character HP Calculations

Example 1: Level 5 Cleric (d8), CON 14, Fixed HP

CON 14 gives a +2 modifier
Level 1: 8 + 2 = 10
Levels 2-5: 4 levels × (5 + 2) = 28
Total HP = 38

Example 2: Level 8 Barbarian (d12), CON 16, Tough Feat

CON 16 gives a +3 modifier
Level 1: 12 + 3 = 15
Levels 2-8 fixed: 7 levels × (7 + 3) = 70
Tough feat: 8 × 2 = 16
Total HP = 101

Common HP Mistakes in 5e

Forgetting to add Constitution modifier at every level.
Applying max hit die beyond level 1 by accident.
Leaving out Tough or other passive bonuses.
Mixing fixed and rolled methods without tracking totals clearly.

FAQ

Does this work for multiclass characters?

This version is for single-class calculations. For multiclass builds, calculate each class segment separately and add them together.

Can HP go down if my Constitution modifier drops?

Yes. If your CON modifier changes, your maximum HP changes by 1 per level per modifier step changed.

Is expected roll average official?

No. It is a planning tool. Officially, you either roll or take fixed values based on your table’s rules.

Final Tip

Keep your HP math simple and consistent. Pick one level-up method, track bonuses as they happen, and review totals after every level. A clean HP calculation prevents confusion in the middle of combat and helps your DM keep encounters balanced.