5e Hp Calculator

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Reviewed by Alex Miller, Tabletop RPG Expert & System Analyst

Use this free 5e HP Calculator to instantly determine your Dungeons & Dragons character’s maximum hit points using the standard “fixed average” rule. Perfect for leveling up quickly without rolling dice.

5e HP Calculator

Please enter valid values. Level must be between 1 and 20.
Enter the modifier (e.g., +2), not the score.
Maximum Hit Points
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Step 1 (Level 1 HP):

Step 2 (Level Up HP):

Step 3 (Bonuses):

Total:

5e HP Calculator Formula

The standard “fixed” method for calculating Hit Points in D&D 5th Edition assumes you take the average roll (rounded up) for every level after the first. Here is the formula:

HP = (Max Hit Die + Con) + [ (Level – 1) × (Avg Hit Die + Con) ]

Source: D&D Beyond Basic Rules & Roll20 Compendium

Variables

  • Hit Die: Determined by your class (d6, d8, d10, or d12).
  • Max Hit Die: The highest number on your class’s die (used at Level 1).
  • Avg Hit Die: The average roll rounded up (d6=4, d8=5, d10=6, d12=7).
  • Con (Constitution Modifier): Your bonus HP per level derived from your Constitution score.
  • Level: Your current character level.

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What is 5e HP Calculator?

A 5e HP Calculator is a tool designed for Dungeons & Dragons players and Dungeon Masters to quickly determine the maximum Hit Points (HP) of a character without needing to manually do the math or roll dice. In 5th Edition, HP is a measure of a character’s durability and will to live.

While players can choose to roll for HP when they level up, many groups prefer the “Fixed HP” method provided in the Player’s Handbook. This method guarantees a specific increase based on class, ensuring characters don’t fall behind due to bad dice rolls. This calculator specifically utilizes that fixed average method for reliable results.

How to Calculate 5e HP (Example)

Let’s calculate the HP for a Level 5 Fighter with a Constitution Modifier of +3.

  1. Determine Hit Die: Fighters use a d10.
  2. Level 1 Base: Max d10 (10) + Con (3) = 13 HP.
  3. Levels 2-5 (4 levels): The average of a d10 is 6. So, (6 + 3) = 9 HP per level.
  4. Calculate Growth: 9 HP × 4 levels = 36 HP.
  5. Total: 13 (Base) + 36 (Growth) = 49 Total HP.

Frequently Asked Questions (FAQ)

Does Constitution retroactive affect HP in 5e?

Yes. If your Constitution modifier increases (e.g., at level 4 via Ability Score Improvement), your HP increases retroactively for every level you have gained so far.

How does the Hill Dwarf trait work?

The Hill Dwarf racial trait “Dwarven Toughness” grants +1 hit point maximum increases by 1, and it increases by 1 every time you gain a level.

What is the Tough feat calculation?

The Tough feat grants an additional +2 hit points for every level your character has. At level 10, this provides +20 extra HP.

Do I use the score or the modifier?

Always use the **Modifier** (e.g., +2 or +3) when calculating HP, not the total Score (e.g., 14 or 16).

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