⚖️ Encounter Difficulty Calculator

Will this fight be fair? Enter your party's levels, pick your monsters, and get a difficulty rating using the classic 2014 encounter-building math — XP thresholds by level, monster XP by Challenge Rating, and the encounter multiplier for monster count. Everything runs in your browser: no account, no AI, works offline at the table.

1. Your party

2. Pick monsters

Searches the same monster registry the Encounter Builder uses — the built-in creatures plus any SRD monsters you previously added on the DM screen (they stay saved in your browser, so this page works fully offline).

Your encounter

No monsters yet — search and hit Add.

3. Difficulty

Adjusted XP–
Monster XP (raw)–
Encounter multiplier–

How the math works

1. Each character level has XP thresholds for Easy / Medium / Hard / Deadly (2014 DMG). Your party's thresholds are the sum of each character's — anything below the Easy total is Trivial.

2. Each monster is worth XP based on its Challenge Rating (e.g. CR 1/2 = 100 XP, CR 2 = 450 XP).

3. The total monster XP is multiplied by the encounter multiplier for the number of monsters (×1 for one monster, ×1.5 for two, ×2 for 3–6, ×2.5 for 7–10, ×3 for 11–14, ×4 for 15+). The multiplier shifts one step up for parties of 1–2 and one step down for parties of 6+.

Ratings are guidelines, not guarantees — clever tactics, terrain, and magic items all change a fight. When in doubt with young players, aim for Easy or Medium.