DnD Weapons Rules and Properties

The weapons system in Dungeons & Dragons is one of the most mechanically dense corners of the game — a fighter choosing between a greatsword and a longsword is making a real mathematical decision, not just a flavor choice. This page covers how weapons are categorized in the fifth edition rules, how properties interact with character abilities, which scenarios create meaningful decision points, and where the rules draw firm lines. The key dimensions and scopes of DnD stretch across combat, exploration, and social interaction, but few areas reward close reading as much as the weapons tables.

Definition and scope

The Player's Handbook for fifth edition organizes weapons into two broad categories: simple and martial. Simple weapons — clubs, daggers, handaxes — are accessible to nearly every character class. Martial weapons require specific proficiency, which most fighter, paladin, and ranger builds receive by default.

Within those two categories, weapons split again along a second axis: melee versus ranged. A handaxe sits in an interesting middle position — it is a simple melee weapon that also carries the Thrown property, meaning it functions at range without requiring a separate ranged proficiency check. That dual nature matters more than it might seem when a druid realizes they can hurl a handaxe and still add their proficiency bonus to the attack roll.

The full weapons table in the Player's Handbook lists 37 distinct weapons, each carrying between zero and four properties that modify how the weapon behaves in play.

How it works

Weapon properties are not suggestions — they are rules-as-written modifiers that change the attack and damage calculation. The core properties most players encounter are:

1. Finesse — The attacker may use either Strength or Dexterity for attack and damage rolls. A rapier carries this property; a longsword does not. This is the entire mechanical foundation of the rogue's Dexterity-based melee archetype.
2. Versatile — The weapon can be wielded with one or two hands, with a larger damage die when used two-handed. A longsword deals 1d8 one-handed and 1d10 two-handed.
3. Light — A prerequisite for Two-Weapon Fighting. Both weapons in a dual-wield setup must carry this property, which is why a fighter cannot dual-wield two longswords without a specific feat.
4. Heavy — Small creatures (gnomes, halflings) suffer disadvantage on attack rolls with Heavy weapons. A halfling barbarian wielding a greataxe is mechanically penalized.
5. Reach — Extends the weapon's melee range by 5 feet, to 10 feet total. A polearm with Reach can trigger opportunity attacks at greater distance.
6. Two-Handed — Requires both hands. No shield. This is an absolute constraint, not a preference.
7. Thrown — Can be used for a ranged attack without switching weapon type. Uses the same ability modifier as the melee attack.
8. Loading — Limits the wielder to one attack per action regardless of extra attack features. Relevant for crossbow users until they acquire the Crossbow Expert feat.

Ammunition weapons require the attacker to spend one piece of ammunition per attack. Running out of ammunition mid-combat is a real mechanical state, not just flavor — once the quiver hits zero, the ranged weapon is effectively inert until resupplied.

Common scenarios

The Finesse property generates the most frequent rules questions at tables. A rogue with 18 Dexterity and 10 Strength using a rapier will add +4 to both attack and damage rolls. Swap to a shortsword (also Finesse) and the math is identical. Swap to a longsword (no Finesse), and the rogue is suddenly using +0 Strength, cutting accuracy and damage simultaneously — a swing of roughly 20% in expected hit rate against a typical Armor Class 15 target.

Two-Weapon Fighting creates another common pressure point. Without the feat, the off-hand attack does not add the ability modifier to damage (though it still adds a negative modifier if the modifier is negative). The DnD frequently asked questions page addresses this interaction directly, because it surprises players expecting the second attack to mirror the first.

Improvised weapons — a wine bottle, a chair leg, a torch — deal 1d4 damage by default under the Player's Handbook rules. The Dungeon Master may rule that an improvised weapon resembling an actual weapon functions as that weapon, which occasionally rewards creative players.

Decision boundaries

The greatsword-versus-greataxe comparison illustrates how the rules create genuine optimization questions. A greatsword deals 2d6 damage (average 7), while a greataxe deals 1d12 (average 6.5). Over 100 attacks, the greatsword produces a higher mean. The greataxe, however, pairs better with the barbarian's Brutal Critical feature, which adds extra damage dice on a critical hit — a single d12 beats two d6s in that specific context because it adds one full die rather than one half-die.

The how it works breakdown of the core resolution system clarifies that proficiency bonus applies to weapon attack rolls only when the character is proficient with that weapon category. Using a martial weapon without proficiency means no proficiency bonus — a penalty that scales from +2 at level 1 to +6 at level 17.

Silvered weapons cost 100 gold pieces to create and bypass damage resistance for creatures such as werewolves and certain devils. That cost-to-benefit ratio matters in campaigns where supernatural enemies appear consistently. The rules do not automatically make magical weapons silver — a +1 sword and a silvered sword solve different problems.

The ammunition economy for ranged weapons includes one detail that saves resources: after a battle, half of all expended ammunition can be recovered, assuming the attacker takes time to search the area. That recovery rule is in the Player's Handbook and applies to arrows, bolts, and similar projectiles — but not to thrown weapons that shatter on impact, which is a Dungeon Master call based on fiction.