Encounter difficulty for your actual party, in 2014 or 2024 rules. Type the monsters, get the verdict.
Encounter Builder · Free, no sign-up · saved in this browser only
Add a monster and a CR. Type your party's levels above.
Encounter building is the most tedious half-hour of prep in fifth edition. XP budgets per character, challenge ratings converted to XP, and — in the 2014 rules — a multiplier that depends on how many monsters there are, because six goblins are worse than their arithmetic suggests. It is all lookup tables, and it is all done by hand on a Sunday night.
Type the monsters you had in mind and their challenge ratings. It rates the fight against your party (type the levels in, or with a subscription it reads the party from your Party Manager) and shows its working — thresholds, raw XP, the multiplier — so you can disagree with it on the evidence rather than just distrust it.
Encounter Builder is free. The paid plan joins it to your party, your character sheets and your AI assistant, and saves everything to your account, on every device. It is one of twenty-one tools, 15 of them free.
Your parties, saved. Every tool knows who's at the table.
Three hours to game and no plan. Press the button.
The shape of one evening, on one page. Threads carry over.
CR-appropriate treasure with flavour text, ready to paste into your VTT.
The player asked the barkeep's name. You have eight seconds.