At 1st level, you get the maximum value of your hit die plus your Constitution modifier. For each level after that, you can either:

• Roll your hit die and add your Constitution modifier
• Take the average (rounded up) plus your Constitution modifier

This calculator shows you the average, minimum, and maximum possible HP for any combination.

Your Constitution modifier is derived from your Constitution ability score:

For every 2 points above 10, you get +1 modifier. For every 2 points below 10, you get -1 modifier.

Our calculator has all classes pre-configured with the correct hit die, so you don't need to remember these!

Short answer: Not directly, but you can use it effectively for multiclass characters.

For example, for a Fighter 3 / Wizard 2, calculate Level 3 Fighter HP + Level 2 Wizard HP and add them together.

Average HP uses half your hit die (rounded up) plus 1 for every level after 1st, plus your Constitution modifier at every level. For example, a Fighter (d10) gains a flat 6 HP per level after 1st when averaging.

Use the calculator above with "Average" selected to get this instantly for any class, level, and Constitution combination.

Both are valid RAW options, but they trade off differently:

• Taking the average is safer and predictable — you'll never roll a disappointing 1 or 2 on a big hit die, and your HP total is consistent every time you level up.
• Rolling has upside variance — you could roll the maximum every level for an unusually tanky character — but also downside risk of consistently low rolls.

Many tables let you choose per character or even per level. This calculator shows you the average, minimum, and maximum outcomes side by side so you can compare before deciding.

Yes! Artificer uses a d8 hit die, the same as Bard, Cleric, Druid, Monk, Rogue, and Warlock. Select "Artificer (d8)" from the Character Class dropdown above and enter your level and Constitution modifier as normal.

All the same options apply — average vs. rolled HP, Tough Feat, racial bonuses — the calculation is identical to any other d8 class.

Monster and NPC stat blocks use a different notation than player characters: hit dice + a flat modifier, written like 8d8+16.

• The number before "d" is how many dice to roll (or average).
• The number after "d" is the die size.
• The number after "+" is a flat bonus (usually from Constitution) applied once, not per die.

For an average result: multiply the number of dice by (die size ÷ 2 + 0.5), round down, then add the flat bonus.

The mental-math shortcut most tables use: take the maximum of your hit die at level 1 (plus Constitution modifier), then add a flat amount per level after that — half your hit die rounded up, plus 1, plus your Constitution modifier.

For example: a d8 class gains 5 HP per level after 1st (4 + 1) before Constitution. A d10 class gains 6, a d12 class gains 7, and a d6 class gains 4. This is exactly what "Average" mode calculates instantly above, but it's handy to know by heart at the table.