Loot Drop Probability Calculator
How to Use
| Item | Pool | Weight | Chance % | P≥1 intries | Eligible | Lock | Target | |
|---|---|---|---|---|---|---|---|---|
| 70.00 | 100.00 | |||||||
| 25.00 | 94.37 | |||||||
| 5.00 | 40.13 |
Trials
Seed
Total Weight: 100
Pools & Composition
When on, the sum of composition values defines picks/roll and per-draw odds are pool-weighted.
| Pool | Weight | Share% | Picks/roll |
|---|---|---|---|
| A | 100 | 100.00 | 0 |
| B | 0 | 0.00 | 0 |
Precision
n ≥ z²·p·(1−p)/e², where p is each item’s expected per-draw probability.
Common
Draws: 8068
Rolls: 8068
Rare
Draws: 7203
Rolls: 7203
Epic
Draws: 1825
Rolls: 1825
Group Odds
Compute probability for a set of items.
Hint: filters match substrings case-insensitively; leave blank to include all.
Matches: 3
Per-draw p: 100.000%
Per-roll p: 100.000%
Rolls for 90%: 0
Target Odds
Approximate rolls needed to reach a desired chance for items marked Target.
Uses p_roll = 1 - (1 - p)^K
Mark one or more items as Target to see calculations.