Question 1

How do I build a balanced encounter in D&D 5e?

Accepted Answer

Start by setting your party size and average level. The encounter builder calculates XP thresholds for Easy, Medium, Hard, and Deadly difficulties based on the DMG (p. 82-83). Add monsters until the adjusted XP falls within your desired difficulty range. The adjusted XP accounts for the encounter multiplier, which makes groups of monsters more dangerous than their raw XP suggests.

Question 2

What is the encounter multiplier and why does adjusted XP differ from total XP?

Accepted Answer

The encounter multiplier from the DMG reflects that multiple monsters are more dangerous than their individual XP totals suggest. One monster uses a x1 multiplier, two use x1.5, three to six use x2, and so on up to x4 for 15+ monsters. Parties smaller than 3 increase the multiplier, while parties of 6+ decrease it. The adjusted XP is used only for difficulty calculation — actual XP awards use the base total.

Question 3

How does the random encounter generator work?

Accepted Answer

Select your desired difficulty (Easy, Medium, Hard, or Deadly) and click Generate. The builder randomly selects monsters from the full SRD bestiary and adds them until the adjusted XP falls within the target difficulty range. You can then customize the result by adding, removing, or adjusting monster counts. The generator respects the encounter multiplier rules so the final difficulty is accurate.

Question 4

Can I save my encounters for later?

Accepted Answer

Yes. The encounter builder automatically saves your current encounter (party configuration and monster list) to your browser's local storage. When you return to the page, your last encounter is restored automatically. You can also use the print button to create a physical or PDF copy of your encounter for use at the table.

Question 5

What is the difference between the Encounter Builder and the Encounter Calculator?

Accepted Answer

The Encounter Calculator lets you add individual party members at different levels and manually enter monster XP values for precise difficulty calculations. The Encounter Builder is a more streamlined tool — set a party size and level, then search and add monsters from a built-in bestiary with filtering by CR, type, and name. It also includes a random encounter generator and auto-save functionality.

D&D 5e Encounter Builder

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