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No, not under the 2014 fifth-edition Sage Advice ruling. Natural armor and Unarmored Defense are alternative ways to calculate Armor Class (AC), not bonuses you combine. If a character can use both, choose one complete calculation.
How the 2014 rule works
The Sage Advice Compendium, version 2.0, treats each AC formula as a separate method. It says: “These methods—along with any others that give you a formula for calculating your AC—are mutually exclusive; you can benefit from only one at a time.” That includes natural armor and Unarmored Defense.
In other words, natural armor is not an extra AC bonus to add on top of a class feature’s formula. Compare the complete calculations your character is permitted to use, then use one of them.
Common AC calculations
- Unarmored: 10 + Dexterity modifier.
- Barbarian Unarmored Defense: 10 + Dexterity modifier + Constitution modifier.
- Monk Unarmored Defense: 10 + Dexterity modifier + Wisdom modifier.
- Natural armor: The compendium’s general example uses 10 + Dexterity modifier + a natural armor bonus.
Some creature or form traits specify a different formula or a fixed AC. Read the exact trait rather than assuming every natural-armor feature uses the general example.
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Example: a druid/barbarian in beast form
The Sage Advice Compendium addresses this case directly: a druid/barbarian in a beast form with natural armor can use the beast’s natural armor or Unarmored Defense, but cannot combine them.
For example, a Barbarian with Dexterity 14 and Constitution 16 has an Unarmored Defense AC of 15: 10 + 2 for Dexterity + 3 for Constitution. The official 2014 Basic Rules ability table gives scores of 14–15 a +2 modifier. If the form’s applicable natural-armor calculation also gives AC 15, the character chooses one; adding the Barbarian’s Constitution modifier to that natural-armor result to reach AC 18 is not allowed by this ruling.
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Does natural armor count as wearing armor?
Not in the Sage Advice example: having natural armor does not mean the character is considered to be wearing armor. That does not make the natural-armor calculation stackable with Unarmored Defense; whether a character is wearing armor and which AC formula applies are separate questions.
Can you use a shield?
Shield eligibility depends on the text of the Unarmored Defense feature. The Monk version requires the character to forgo both armor and a shield. The Barbarian version requires the character to forgo armor, but does not impose the same shield restriction. D&D Beyond’s Sage Advice reference describes these differences; it also notes that a shield generally increases AC by 2. Follow the specific feature’s conditions when deciding whether a shield applies.
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Keep the edition and feature text in view
The ruling above is specifically documented for the 2014 fifth-edition rules. The official materials cited here do not establish the corresponding wording for the 2024 rules, so do not assume this 2014 clarification independently settles that edition’s interaction. Check the Player’s Handbook for the edition you are playing and the exact natural-armor trait in question.
The Sage Advice Compendium collects official rules interpretations, while the Dungeon Master adjudicates rules and has the final say at the table, as explained on D&D Beyond’s Sage Advice page.
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