Monster Generator
Create a D&D 5e monster stat block with full encounter content.
About This Monster Generator
This free D&D 5e monster generator rolls a complete stat block in one click: size and type, armor class, hit points and hit dice, ability scores, speeds, senses, damage and condition defenses, languages, traits, and a full action list, plus ready-to-run encounter content. Every result is seeded, so the same link always rebuilds the same creature.
Traits are drawn from 149 hand-written templates: 10 tuned to each of the 14 creature types (from aberration to undead) plus 9 universal ones any creature can take. Armor class, hit points, attack bonus, damage, and save DC all come from a 34-tier reference table covering CR 0 through CR 30, so a generated monster sits in the same power band as one from the book.
Example Monsters
Two real results, exactly as the generator produced them, condensed for length. Each link recreates the full stat block from its seed.
- Medium elemental, AC 13, 101 HP (12d8+36), walk 30 and fly 69, darkvision 60, speaks Auran.
- Traits Earth Glide and Water Form; Multiattack of two Burning Touch strikes (+4, 2d6+2 fire) plus a Slam (+4, 2d6+2 bludgeoning).
- Encounter hook: a sandstorm dies down and it is suddenly visible only paces away, reshaping the terrain, driven to avenge a violation of its domain.
- Medium ooze, AC 13, 108 HP (13d8+39), immune to acid, blindsight 10 and tremorsense 60.
- Traits False Appearance and Split; a single Acid Splash attack (+4, 6d6+2 acid, average 23).
- Encounter hook: the party rounds a high pass and finds it perched on an outcrop sifting through bones, ready to ooze up a wall and drop on the rearmost member.
Tips for Using Generated Monsters
- Leave every dropdown on Random and the seed picks type, size, and environment; lock Challenge Rating on its own when you just need a fight that fits your party.
- Every stat block ships with encounter content: a read-aloud situation, the creature's tactics, personality, and treasure, so a random pick becomes a runnable scene, not just numbers.
- Tick Include Lair on a boss and the generator adds lair actions and regional effects for creatures whose CR and type support them.
- Match the creature type to your environment so the description and encounter hook fit where the party actually is: a desert elemental, a mountain ooze.
- Pin a monster to the Session Notebook before the game, then reopen its seed link at the table to pull the full stat block back up.
For balancing generated monsters into a fair fight, read the guide: How to Build D&D 5e Encounters
Common Questions
- Is this monster generator free?
- Yes. Every tool on Tools and Taverns is free, with no account, signup, or generation limit.
- How are the stat blocks balanced?
- Each block is built from a 34-tier challenge rating table spanning CR 0 to CR 30 that fixes armor class, hit points, attack bonus, damage output, and save DC, so a generated CR 3 creature lands in the same power band as a published one.
- Can I choose the creature type and challenge rating?
- Yes. Pick from 14 creature types, 12 environments, and 34 challenge ratings, or leave any of them on Random and the seed fills it in for you.
- What does the Include Lair option do?
- Ticking it adds lair actions and regional effects for creatures whose challenge rating and type are dangerous enough to warrant a lair. Most low-CR creatures will not get one, which matches how lairs work in the books.
- How do I get the same monster back later?
- Every monster has a seed that is written into the page URL after generating. Copy the link (or use the Share button) and opening it rebuilds the identical stat block, encounter hook and all.