Swarm of Rats
Medium swarm of tiny beasts · CR 1/4 · 50 XP
10 AC · 14 HP
Roll the Swarm of Rats
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Stat block
- Type
- Medium swarm of tiny beasts, unaligned
- Armor Class
- 10
- Hit Points
- 14 (4d8 − 4)
- Speed
- 30 ft., climb 30 ft.
- Challenge
- 1/4 (50 XP), proficiency +2
- Resistances
- bludgeoning, piercing, slashing
- Condition immunities
- Charmed, Frightened, Grappled, Paralyzed, Petrified, Prone, Restrained, Stunned
- Senses
- darkvision 30 ft., passive perception 10
- Languages
- None
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 9 | 11 | 9 | 2 | 10 | 3 |
Swarm of Rats odds against your Armor Class
Chance to hit, then average damage per attack once misses and critical hits are counted.
| Attack | AC 12 | AC 14 | AC 15 | AC 16 | AC 18 | AC 20 |
|---|---|---|---|---|---|---|
| Bites (+2) | 55% 4.5 dmg | 45% 3.8 dmg | 40% 3.4 dmg | 35% 3 dmg | 25% 2.3 dmg | 15% 1.5 dmg |
Swarm of Rats hit points
The stat block uses the average, 14. Rolled, 4d8 − 4 lands anywhere from 0 to 28.
| Hit points | Chance |
|---|---|
| 7 or more | 95% |
| 14 or more | 54% |
| 21 or more | 8% |
| 25 or more | 1% |
Traits
Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can’t regain Hit Points or gain Temporary Hit Points.
Actions
Bites. Melee Attack Roll: +2, reach 5 ft. Hit: 5 () Piercing damage, or 2 () Piercing damage if the swarm is Bloodied.
Other CR 1/4 monsters
Animated Flying Sword 
Axe Beak 
Blink Dog 
Boar 
Constrictor Snake 
Draft Horse 
Dretch 
Elk 
Giant Badger 
Giant Bat 
Giant Centipede 
Giant Frog
This page includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License. The averages, odds and tables are ours.