Stealth and Hiding Rules
Stealth in Dungeons & Dragons is one of those mechanics that sounds simple until someone tries to hide behind a barrel mid-combat while the goblin they just punched is standing three feet away. The rules governing hiding, remaining unseen, and moving silently appear across multiple sections of the Player's Handbook and Dungeon Master's Guide, and the gaps between them have generated more table arguments than almost any other subsystem in fifth edition. This page covers how the rules are written, how the moving pieces interact, and where Dungeon Masters have to make a judgment call.
Definition and scope
Hiding in D&D 5e is governed primarily by the Dexterity (Stealth) skill check, described in the Player's Handbook (5th edition, Chapter 7, under "Dexterity"). A creature that successfully hides becomes undetected by one or more other creatures — it is neither seen, heard, nor precisely located. The rules also introduce the conditions invisible (Chapter 9, "Conditions") and the distinction between being unseen and being undetected, two states that the 2024 revised ruleset under the new D&D rules restructuring treats with considerably more precision than the 2014 edition did.
The scope of stealth covers three distinct situations that players regularly conflate:
- Hiding before combat begins — a creature attempts to avoid notice before initiative is rolled.
- Hiding during combat — a creature uses the Hide action on its turn, typically requiring it to first move out of clear line of sight.
- Passive detection — observers who aren't actively searching still have a Passive Perception score (10 + Perception modifier) that acts as a standing threshold against Stealth checks.
Each of these operates under the same basic mechanic but with meaningfully different constraints depending on context.
How it works
A creature attempting to hide makes a Dexterity (Stealth) check. That result is compared against the Passive Perception of any potential observers, or against an active Wisdom (Perception) check if an observer is specifically searching. The higher result wins.
The rules specify two prerequisites for hiding that the Player's Handbook states plainly: the creature must be obscured (either heavily or lightly, depending on the action), and it must not be directly observed. "Heavily obscured" means a condition — dense fog, darkness, thick foliage — that effectively blinds creatures within it. "Lightly obscured" includes dim light, patchy fog, and moderate foliage, which impose disadvantage on Perception checks but don't block sight entirely.
One mechanic worth isolating: the Unseen Attackers and Targets rule (Player's Handbook, Chapter 9). When a creature attacks from hiding, the attack roll has advantage, and the attacker's location is revealed after the attack regardless of outcome. A successful Stealth check doesn't grant unlimited free strikes — it grants one moment of positional advantage before the hidden creature becomes locatable again.
The Ranger's Hide in Plain Sight feature (available at 10th level) and the Rogue's Cunning Action (available at 3rd level, allowing a Hide action as a bonus action) represent the two most mechanically significant class modifications to the baseline stealth rules. Both are described in the core class tables that define how character abilities interact with fundamental game mechanics.
Common scenarios
The mid-combat hide: A Rogue dashes behind a column, takes the Hide action as a bonus action, and rolls a 17 on Stealth. The enemy has a Passive Perception of 14. The Rogue is now hidden. On the next turn, the Rogue attacks with advantage, hits, applies Sneak Attack damage, and is now visible again. This is the intended loop — it works exactly as written.
The "I hide in plain sight" argument: A player tries to hide from a creature that is looking directly at them with no intervening cover. The rules are clear here: the creature must be obscured or out of direct observation. Hiding from someone staring at the character is not possible under the RAW (Rules As Written) framework, regardless of how high the Stealth roll is.
Passive Perception as a filter: A party moves through a dungeon corridor. Nobody asks to roll Perception. The DM compares the Stealth checks of any lurking enemies against the lowest Passive Perception in the group — typically 10 for a character with no Wisdom modifier and no Perception proficiency. This is the stealth system working quietly in the background, exactly as designed.
Group Stealth checks: The Player's Handbook (Chapter 7, "Group Checks") specifies that when a group attempts something together, each member rolls, and the group succeeds if at least half the members succeed. This is the appropriate mechanic for a party trying to sneak past guards — not a single roll, not the worst roll, but a majority threshold.
Decision boundaries
The rules leave several specific situations explicitly to DM discretion, and the Player's Handbook acknowledges this directly rather than pretending otherwise.
The most contested boundary: can a creature hide with only lightly obscuring cover? The rules permit it (lightly obscured creates the possibility of hiding), but the DM determines whether the fiction supports the attempt. A creature standing in dim light 10 feet from a guard is not in the same position as one crouched behind a pillar in a shadowed alcove — even if both qualify as "lightly obscured."
A second boundary: how long does hidden status last? The rules don't specify a duration. It lasts until the creature is discovered, attacks, or takes an action that reveals its position. In practice, this means stealth status persists between rounds until something breaks it, which can create contested situations in slow-moving exploration. The FAQ section addresses several of the most common edge cases that arise at the table.
The distinction between the 2014 Player's Handbook rules and the 2024 revised edition matters here: the 2024 rules introduced explicit definitions of Undetected and Invisible as formal conditions with enumerated effects, replacing the more loosely worded 2014 language. Tables still running 2014 rules operate under a less precise framework — which explains why understanding how stealth fits into the broader rules system is worth the effort before the session starts.