DnD Grappling Rules Explained
Grappling is one of the most tactically interesting — and most frequently misread — actions available in Dungeons & Dragons 5th Edition. The rules occupy roughly half a page in the Player's Handbook (p. 195), yet they generate a disproportionate share of table disputes. This page covers the full mechanical scope of grappling: how to initiate it, what it does and doesn't restrict, and how Dungeon Masters can rule consistently at the edges.
Definition and scope
A grapple is a special melee attack that imposes the Grappled condition on a target rather than dealing damage. The Player's Handbook defines the Grappled condition as: movement speed becomes 0, and the condition ends if the grappler is incapacitated or if the target is moved beyond the grappler's reach. That's the entire mechanical effect of the condition itself — no penalties to attack rolls, no restriction on the target's action economy.
This surprises players who expect grappling to be a full lock-down maneuver. It isn't. The Grappled condition is better understood as an anchor than a cage. The target can still attack, cast spells, use items, and take reactions freely. The only thing stripped away is the ability to move under their own power — which is still significant in a game where positioning and movement shape nearly every combat exchange.
The scope of valid grapple targets is also bounded: the target must be no more than one size category larger than the grappler. A Medium character can grapple a Large creature but not a Huge one — unless a feature like the Goliath's Powerful Build trait effectively bumps their size for that calculation.
How it works
Grappling replaces one of the attacks in an Attack action — it is not a separate action. On a turn where a character has the Extra Attack feature, they can grapple with one attack and strike with the remaining ones.
The resolution uses a contested ability check, not an attack roll against Armor Class:
- The grappler makes a Strength (Athletics) check.
- The target makes either a Strength (Athletics) or Dexterity (Acrobatics) check — their choice.
One mechanical wrinkle worth internalizing: ties go to the grappler. The grappler succeeds if their total meets or beats the target's — not strictly exceeds it. This gives a marginal statistical edge to the attacker.
To drag or carry a grappled creature, the grappler simply moves, but their speed is halved unless the target is two or more sizes smaller. A Medium character hauling another Medium creature moves at half speed; dragging a Small creature imposes no penalty.
For players exploring the full scope of combat mechanics, grappling pairs naturally with the Shove action — another special attack that can knock a target prone. A prone, grappled creature has speed 0, can't stand without eating half its movement (which it doesn't have), and grants advantage on melee attacks made within 5 feet.
Common scenarios
Grapple plus Shove is the signature two-attack combo for Strength builds. Turn 1 of combat, a Fighter with Extra Attack grabs a target with one swing and shoves them prone with another. Every subsequent melee attack — from the Fighter and any adjacent ally — lands with advantage.
Spellcasting while grappled creates no automatic impediment. A Wizard grabbed by an enemy can still cast Fireball from the center of a melee brawl. The only spells affected are those requiring the caster to move as part of casting, or those with a range of Self that the caster hoped to position carefully. This is a point where frequently asked questions cluster heavily — players often assume being grabbed prevents spellcasting, but the Grappled condition simply does not say that.
Grappling underwater follows the same rules, though the environment introduces additional mechanics from Player's Handbook p. 198: creatures without a swim speed have their melee attack rolls affected based on movement method, but the grapple check itself remains Athletics vs. Athletics/Acrobatics.
Grappling and forced movement: if a grappled creature is shoved, pushed by a spell like Thunderwave, or otherwise moved by an external force, the Grappled condition ends — the grappler's reach is exceeded. This is intentional and creates interesting counterplay for the grappled party.
Decision boundaries
Where DM rulings become necessary:
Can a grappler be grappled in return? The rules do not prohibit this. Two creatures can simultaneously hold each other grappled, which produces the entertainingly gridlocked outcome of two fighters with effective speed 0, wrestling each other while their parties fight around them.
Does grappling require two hands? The rules specify the grappler uses "at least one free hand." A character wielding a two-handed weapon cannot grapple without stowing it, but a character with a shield and a weapon has one hand occupied by the weapon — and the shield arm is not a "hand" in the free-hand sense. This is a DM call that varies by table.
Grapple vs. Restrained condition: These are distinct and not interchangeable. Restrained imposes speed 0 and disadvantage on attack rolls and advantage for attackers — a far more punishing condition than Grappled. Features like a Monk's Stunning Strike or a Paladin's Compelled Duel interact with movement in different ways than grappling does. Players building around crowd control should understand this distinction clearly before designing a character around it.
For new players getting oriented on how combat actions fit together, the main rules reference provides broader context on the action economy that makes grappling decisions legible at a glance. And for edge cases that don't fit neatly into any of the above — the kind of situation where one player insists the rules say one thing and another insists the opposite — the help resources section outlines where official errata and Sage Advice rulings can resolve the dispute without a table argument.