DnD Falling Damage Rules
Falling damage is one of those rules that sits quietly in the background until someone decides to push a goblin off a cliff — and then suddenly everyone at the table wants to know exactly how it works. The core mechanic is straightforward, but edge cases multiply fast: flying creatures, falling onto other creatures, Feather Fall timing, and whether a Monk can somehow survive a 1,000-foot drop. This page covers the base rule, the math behind it, the most common situations that trigger it, and where Dungeon Masters have real interpretive latitude.
Definition and scope
Falling damage applies whenever a creature descends involuntarily (or voluntarily, but unwisely) from a height and strikes a solid surface. The rule appears in the Player's Handbook (5th edition) under the Environmental Hazards section and is referenced again in the Dungeon Master's Guide.
The scope is deliberately broad. It covers player characters, monsters, and NPCs equally. It applies whether the fall results from a failed Athletics check on a cliff face, a Thunderwave spell that blasts someone off a tower, or a dragon simply dropping an enemy from altitude. The rule doesn't distinguish cause — only distance and consequence.
One thing the base rule does not cover by default: falling onto another creature. That scenario, along with improvised landings and terminal velocity, falls into Dungeon Master discretion territory — more on that below.
How it works
The base rule from the Player's Handbook is clean and unambiguous:
A creature takes 1d6 bludgeoning damage for every 10 feet it falls, up to a maximum of 20d6 (capped at 200 feet of fall distance).
That cap matters. A creature falling 200 feet and a creature falling 2,000 feet take the same maximum damage: 20d6, which averages 70 damage and tops out at 120. From a physics standpoint this is politely fictional, but it keeps high-altitude encounters from becoming instant-death scenarios for mid-level characters.
The full breakdown:
- 10 feet — 1d6 bludgeoning (average 3–4)
- 20 feet — 2d6 (average 7)
- 50 feet — 5d6 (average 17–18)
- 100 feet — 10d6 (average 35)
- 200 feet or more — 20d6 (average 70, maximum 120)
Damage is rolled at the end of the fall — when the creature hits the ground. A creature that is reduced to 0 hit points by falling damage is knocked unconscious and begins making death saving throws as normal unless the fall itself causes instant death (which would require taking damage equal to or greater than the creature's hit point maximum in a single hit, per the massive damage rules).
The Xanathar's Guide to Everything introduced an optional rule for falling onto creatures. Under that variant, a falling creature deals damage to whatever it lands on, split evenly, and both the falling creature and the target take the shared damage. This is an optional rule — not core — so whether a table uses it is a DM call.
Common scenarios
Pushed or blasted off ledges. Spells like Thunderwave, Gust of Wind, and the Shove action all create forced movement. If that movement carries a creature over an edge, falling damage applies immediately at the end of the movement. The triggering action and the fall are resolved sequentially.
Flying creatures losing concentration or being knocked prone. A flying creature that becomes prone while airborne falls. A spellcaster maintaining Fly who loses concentration also falls. The fall is measured from the creature's altitude at the moment flight ends. A creature 60 feet up takes 6d6 damage — potentially significant even for a mid-level character.
The Monk's Slow Fall feature. Monks of 4th level or higher can use their reaction to reduce falling damage by an amount equal to five times their Monk level. A 10th-level Monk reduces damage by 50, which effectively negates most real-world falls. A 20th-level Monk reduces damage by 100 — enough to survive the maximum 20d6 roll on a very good day, or any average roll.
Feather Fall timing. The Feather Fall spell (a 1st-level reaction) can be cast in response to the triggering moment of a fall. Since reactions occur before the event resolves, a spellcaster who falls can cast it before damage is rolled. The spell reduces falling speed to 60 feet per round and negates damage on landing — as long as the fall lasts at least one round, which is common for significant heights.
Underwater falls. Falling into water is addressed in the Dungeon Master's Guide: the first 20 feet of a fall into water doesn't count for damage purposes, treating water as a partial cushion. Falls of more than 20 feet into water deal 1d6 per 10 feet beyond those first 20.
Decision boundaries
A few points in the falling damage rules are genuinely ambiguous, and experienced DMs approach them differently.
Horizontal distance and falling. The rules measure falls vertically. A creature launched diagonally — say, catapulted off a ramp — still takes damage based on the vertical drop, not the total travel distance. The horizontal component is irrelevant to damage calculation.
Readied actions during a fall. A fall in combat happens during movement, but a creature that falls from a very high altitude might technically have time to act mid-fall. The DMG notes that a falling creature descends up to 500 feet on the turn it falls — meaning falls shorter than that resolve in a single action, with no mid-fall intervention window.
Falling in zero gravity or unusual environments. Wildspace rules in Spelljammer: Adventures in Space handle this explicitly: in zero-gravity environments, falling damage doesn't apply unless a creature is moving toward a gravity plane at speed.
The clearest contrast in the ruleset is between core falling damage (fixed, mandatory, applies to all creatures) and optional variant rules (creature-on-creature landing, underwater nuances, environmental edge cases) — where the DM's ruling becomes the operative rule at the table.