Hit Points Calculator 5e
Work out your D&D 5th edition character's maximum hit points. Choose a class hit die (d6–d12), set your level and Constitution modifier, then take the fixed average or roll your hit dice — with full multiclass support and a level-by-level breakdown.
Calculate your max HP
Character level 5 of 20 · Hit dice 5d10
Breakdown
Level by level
| Level | Class | Die result | CON | Gained | Running total |
|---|
Worked examples
Example 1 — Level 5 Fighter, CON +2, average
Level 1: max d10 (10) + 2 CON = 12 HP.
Levels 2–5: 4 × (fixed 6 + 2 CON) = 32 HP.
Max HP = 12 + 32 = 44.
Example 2 — Fighter 3 / Rogue 2 multiclass, CON +1, average
Level 1 (Fighter, starting class): max d10 (10) + 1 = 11 HP.
Fighter levels 2–3: 2 × (fixed 6 + 1) = 14 HP.
Rogue levels 1–2: 2 × (fixed 5 + 1) = 12 HP.
Max HP = 11 + 14 + 12 = 37. Hit dice pool: 3d10 + 2d8.
Example 3 — Level 4 Wizard, CON −1, average (minimum-1 rule)
Level 1: max d6 (6) − 1 = 5 HP.
Levels 2–4: 3 × (fixed 4 − 1) = 9 HP.
Max HP = 5 + 9 = 14.
With a very low Constitution the minimum-1 rule kicks in instead: a wizard with −4 CON gains max(1, 4 − 4) = 1 HP per level after 1st.
Hit points FAQ
How do you calculate hit points in D&D 5e?
At character level 1, your hit point maximum is your class hit die's highest roll plus your Constitution modifier. At each level after 1st, you add one hit die roll (or the fixed average value) plus your Constitution modifier, gaining a minimum of 1 hit point per level.
What is the fixed average hit points value for each hit die?
The Player's Handbook fixed values are d6 = 4, d8 = 5, d10 = 6, and d12 = 7. Each is the die's mathematical average rounded up.
Why does this calculator use 6 for a d10 instead of 5.5?
5.5 is the true mathematical average of a d10, but the official rule uses the fixed value, which is the average rounded up. So a fighter gains 6 + CON per level after 1st when taking the average, and a level 5 fighter with +2 CON has 44 hit points.
Do you add your Constitution modifier at level 1?
Yes. Level 1 hit points are the maximum roll of your hit die plus your Constitution modifier. A fighter with +2 CON starts with 12 hit points, not 10.
How does multiclassing affect hit points?
You gain the hit die of each new class level. Only your very first character level uses the maximum die; every level after that uses a roll or the fixed value, plus your Constitution modifier each time. Put your starting class in the first row of the calculator.
Can you gain zero hit points when you level up?
No. You always gain a minimum of 1 hit point per level, even with a very low Constitution modifier. A wizard with -4 CON still gains 1 HP per level after 1st when taking the average.
Should I take the average or roll for hit points?
Taking the fixed average is predictable and slightly above the true mathematical mean, so it wins over many levels. Rolling can give dramatic highs and lows. Most tables pick one method for the whole campaign, so ask your DM.
Is this an official Dungeons and Dragons tool?
No. This is an unofficial fan-made calculator and is not affiliated with or endorsed by Wizards of the Coast.
The math, briefly
Max HP = (max hit die + CON) at level 1, then for every level after 1st add (hit die result + CON), where the result is either the PHB fixed value (d6=4, d8=5, d10=6, d12=7) or a fresh die roll. Each level's gain is at least 1. Your Constitution modifier applies to every hit die, which is why CON is the single biggest lever on hit points — a +2 CON fighter gains 10 extra HP by level 5 compared to +0.
Free tool by NRTechStudio