3/4 cover in 5th edition Dungeons & Dragons defines how much of an object or creature is visible during combat, shaping attack rolls and spell interactions. This article explains how partial cover works in practice, how to visualize it at the table, and how it compares to other cover levels.
Use these guidelines to consistently judge partial cover and improve fairness and clarity during encounters.
| Cover Type | Visibility | Attack Roll Penalty | Typical Examples |
|---|---|---|---|
| Half Cover | At least half the target is visible | +2 to AC | Low wall, crate, large table edge |
| Three-Quarters Cover | Between half and three quarters hidden | +5 to AC | Crumbled doorway, corner with debris, waist-high barrier with overhang |
| Total Cover | No line of effect to the target | Cannot be targeted directly | Full wall, closed door, thick tree trunk |
| No Cover | Clear line of effect | No AC bonus | Open field, empty room |
Understanding Three-Quarters Cover in Gameplay
Three-quarters cover means that a substantial portion of the target is obscured, making it harder to hit without completely blocking line of effect. It typically represents hiding behind barriers that block most of the body but leave some profile visible.
DMs use this category when an obstacle blocks between half and three quarters of the creature. Common examples include a low wall topped with rubble, a shattered doorway, or a battlefield with stacked crates providing partial shelter.
Rules and Mechanics for 3/4 Cover
When to Apply Three-Quarters Cover
Apply three-quarters cover when the DM determines that the target is behind a barrier that obscures a significant portion of its silhouette. The DM makes this call based on line of effect, size of the obstacle, and the position of the attacker.
If at least one line from the attacker to any part of the target is not blocked, and the target is still mostly hidden, three-quarters cover is appropriate. Compare this to half cover, which grants a smaller bonus, and total cover, which blocks targeting entirely.
Practical Examples and Situations
Environment-Based Scenarios
In urban combat, a character crouched behind a waist-high stone wall with a crenellated parapet above may have three-quarters cover, because the parapet obscures the head while the lower body is visible. In ruins, leaning pillars and collapsed beams can create similar conditions.
In natural settings, a thicket with gaps, a ledge with a raised boulder, or a trench partially filled with debris can provide three-quarters cover, depending on how much of the creature is visible to the attacker.
Comparing Cover Types and Tactical Impact
Strategic Considerations for Players and DMs
Understanding how three-quarters cover interacts with long-range attacks, spell lines, and area effects helps both sides make tactical decisions. Characters can position to gain this bonus, while enemies may attempt flanking, forced movement, or area spells to reduce its effectiveness.
DMs should communicate the degree of cover consistently, reward smart positioning, and clarify when partial cover upgrades to total cover as the battlefield changes. This maintains fairness and keeps tactical choices meaningful.
Optimizing Positioning and Tactical Decisions
- Use terrain and debris to gain three-quarters cover when engaging multiple enemies.
- Choose spells and ranged attacks that do not rely on clear line of effect when facing targets behind partial cover.
- Work with allies to flank and force enemies into positions where cover is less effective.
- Communicate clearly with your DM and table to confirm cover interpretations during fast-paced combat.
- Track the battlefield visually or with markers to anticipate when cover upgrades or disappears.
FAQ
Reader questions
Does three-quarters cover apply if only a portion of the target is visible but the attacker has line of effect?
Yes, as long as the target is mostly obscured and the attacker can see and target the creature, three-quarters cover can apply, granting a +5 bonus to AC.
Can spells that require a line of effect ignore three-quarters cover?
If the spell requires a clear line of effect to a specific point, three-quarters cover blocks that line. Spells that target a point or area without needing to see the target can bypass this restriction.
What should I do if my opponent and I disagree about whether three-quarters cover applies?
Use a quick rule such as the DM decides based on position and obstacle size, or have both players mark what they can see, then compare views to agree on the cover level before resolving the attack.
How does three-quarters cover interact with reach weapons and opportunity attacks?
Reach weapons and opportunity attacks still function, but three-quarters cover applies normally to attacks made along the reach if the target is sufficiently obscured, provided the attacker can still perceive the target.