Session Zero Free tools

Free tool

D&D 2024 encounter calculator

Set your party and add monsters by challenge rating. You'll see the 2024 XP budget for low, moderate and high difficulty and where your encounter lands.

  • Free, no sign-up
  • Runs in your browser
  • Shows the working

Uses the 2024 Dungeon Master's Guide method: an XP budget per character with no group multiplier. Check each monster's CR in its stat block. Terrain, hazards and action economy matter as much as the numbers.

Want the whole session prepped?

Two Claude skills do this kind of work with you, step by step. They work on any Claude plan, including the free one. New to Claude?

Free

Session Recap skill

Turns your notes into a read-aloud recap inside Claude.

Good to know

How the 2024 method works

Pick a difficulty (low, moderate or high), look up the XP budget per character for your party's level, and multiply by the number of characters. Then spend that budget on monsters using their XP values. Unlike 2014, there's no multiplier for groups.

Numbers aren't everything

One big monster against four or more characters tends to fall fast, because the party gets many more actions. Add minions, lair actions or a hazard. More than about two creatures per character slows the game, so keep those fragile.

Make it memorable

Give every fight a reason beyond hit points: stop the ritual, protect the villagers, grab the relic and run. Give the enemies a reason to retreat or surrender, and the players a way to win without killing.

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