Using This Calculator
Start by deciding whether your character uses a single class or spans multiple classes. For single-class characters, select your class and level from the dropdown menus. Multiclass characters require you to input each class and its corresponding level—your starting class at level 1 goes in the Initial class field, with subsequent levels distributed across additional classes.
Enter your Constitution modifier, which applies to every hit point calculation. Then select any applicable bonuses: Hill Dwarf grants +1 HP per level, Draconic Sorcerer adds +1 HP per sorcerer level, and the Tough feat provides +2 HP per level regardless of class. The calculator combines these elements to display your maximum HP and total hit dice pool.
What Are Hit Points in D&D 5e?
Hit points represent your character's capacity to endure physical punishment before falling unconscious or dying. A creature at full HP has taken no damage; once HP reaches zero, the creature drops unconscious and is out of combat. Spells like cure wounds, potions, and class features restore lost HP during combat or between rests.
Unlike armour class (which prevents damage), hit points absorb damage that gets through. A fighter and a wizard may have similar AC, but the fighter's larger HP pool reflects their resilience. Constitution—your character's endurance attribute—governs how much HP you gain at each level.
Understanding Hit Dice
Each class grants a hit die of a specific size. Barbarians roll d12s, fighters and paladins use d10s, rogues and monks roll d8s, and wizards use d6s. When you gain a level, you roll one hit die and add your Constitution modifier to the result—that sum increases your maximum HP.
If the roll is low and your modifier is negative, you still gain a minimum of 1 HP per level. During a short rest, you can spend hit dice to recover HP, rolling the die and adding your Constitution modifier for each one spent. Your total number of hit dice equals your character's total level. At character creation, you gain the maximum roll of your initial class's hit die without rolling—no uncertainty on level 1.
Hit Point Calculation
Your maximum HP depends on whether you're single-classed or multiclass. For single-class characters, start with the maximum roll of your initial hit die. For multiclass builds, combine contributions from each class. Your Constitution modifier, racial traits, and feats then layer on top.
Single Class:
Max HP = Max roll + (Con mod × Level) + (Hill Dwarf bonus × Level) + (Tough feat × 2 × Level) + (Draconic Sorcerer bonus × Level)
Multiclass:
Max HP = Sum of averages from all classes + (Con mod × Total level) + (Hill Dwarf bonus × Total level) + (Tough feat × 2 × Total level) + (Draconic Sorcerer bonus × Sorcerer levels)
Max roll— The highest value your class hit die can show (d12 = 12, d10 = 10, d8 = 8, d6 = 6)Con mod— Your Constitution modifier, ranging from −5 to +5 depending on your Constitution scoreLevel— Your character's level in a single class or total levels across all classesHill Dwarf bonus— +1 HP per level if your race is Mountain Dwarf or Hill DwarfTough feat— +2 HP per level if you selected the Tough feat during character creationDraconic Sorcerer bonus— +1 HP per sorcerer level if you're a Draconic Bloodline sorcerer
Common Pitfalls When Calculating HP
These mistakes can throw off your character sheet or lead to table disputes.
- Forgetting the level-one guarantee — Your initial class's hit die at level 1 grants its maximum value automatically—you never roll it. Many players mistakenly roll all hit dice, which typically inflates their HP. Only on subsequent levels do you roll and potentially add your Constitution modifier.
- Negative Constitution modifiers floor at +1 — Even if your Constitution modifier is −2 and you roll a 1 on your d8, you still gain 1 HP per level (not −1). The game prevents your HP from shrinking with each level-up. However, this floor applies per level, not to your final total.
- Multiclass Constitution bonus applies once per total level — Your Constitution modifier multiplies by your total character level, not separately for each class. A fighter 5 / wizard 3 with a +2 Con modifier gains +16 HP from Constitution (8 levels × +2), not +10 from fighter + +6 from wizard calculated independently.
- Draconic Sorcerer bonus stacks with other features — The Draconic Bloodline's +1 HP per sorcerer level adds on top of your normal hit die rolls, Tough feat, and Constitution modifier. Some players apply it as a separate pool; instead, it simply increases your effective HP total by one per sorcerer level.