Cr Calculator 5e
Calculate the Challenge Rating (CR) for Dungeons & Dragons 5th Edition monsters based on their defensive and offensive statistics.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator determines a creature's Challenge Rating (CR) for Dungeons & Dragons 5th Edition based on its combat statistics.
- Enter Hit Points (HP) – The creature's total hit points.
- Enter Armor Class (AC) – The creature's armor class.
- Enter Damage Per Round (DPR) – The average damage the creature deals per round (over three rounds).
- Enter Attack Bonus or Save DC – The creature's attack bonus (for physical attacks) or spell save DC (for magical effects).
- Click "Calculate CR" – The result shows the final Challenge Rating, with a breakdown of Defensive and Offensive CR calculations.
Note: All values must be non-negative integers. The calculator uses standard 5e CR tables and adjusts for differences in AC and attack bonus relative to expected values for the creature's HP/DPR tier.
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Frequently Asked Questions
Challenge Rating (CR) is a numeric value that indicates the difficulty of a monster for a party of adventurers. It helps Dungeon Masters balance encounters.
CR is determined by averaging the Defensive CR (based on hit points and armor class) and Offensive CR (based on damage per round and attack bonus or save DC), then rounding to the nearest integer.
Yes, the calculator supports CR values from 0 to 30, covering the full range of official D&D 5e monsters.
