Random Encounter Calculator
Calculate expected encounter frequency from travel duration, check frequency, and danger level.
Inputs
%
%
Results
Expected Encounters
2.8
Prob. of At Least One94.8%
Day Encounters2.3
Night Encounters0.5
Total Checks20
Effective Day %15%
Time Lost to Encounters1.4 hours
Total Travel Hours41.38
How to Use This Calculator
- Set the terrain type (dungeon, wilderness, urban, sea) and the party level.
- Enter the encounter frequency: rolls per in-game hour or day.
- Set the encounter chance as a percentage or dice threshold.
- Review the Encounter Probability Per Day and the Expected Number of Encounters.
- Use the Encounter Type Distribution to pre-generate a table of appropriate encounters.
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