OSRS Hunter XP, Catches and Success Rate

Use the calculator first

Open the OSRS Hunter Calculator and replace the example defaults with values for the exact OSRS activity you are modeling.

Formula and assumptions

Successful catches needed equal XP remaining divided by XP per catch and rounded up. Attempts needed equal successful catches divided by success rate and rounded up. Expected failures equal attempts minus successful catches. Time divides attempts by attempts per hour. Total cost uses attempts, while gross loot value uses successful catches.

Worked example

If you need 2,000 successful catches and estimate an 80% success rate, the calculator estimates 2,500 attempts and 500 expected failures before adding time and value assumptions.

Visual explanation

The calculator includes a live result diagram and a calculation-flow diagram. They use the same inputs and outputs as the calculator rather than a separate hidden model.

Important limitations

Success rates and action speeds depend on level, creature, trap type, location, competition, equipment, bait, pathing, resets, and activity-specific mechanics. The calculator does not automatically model rumours, birdhouses, implings, Herbiboar, drift nets, or live market prices.

Source

Verify method-specific values against current Old School RuneScape information before using a large cost, training, or probability plan.