How the OSRS Pet Chance Calculator Works

See the calculation flow used by the OSRS Pet Chance Calculator.

Flow diagram explaining how the OSRS Pet Chance Calculator converts user inputs into its main results. — The calculator keeps rates, prices, averages, and probability assumptions visible instead of hiding them.

How the OSRS Pet Chance Calculator works

Single-roll probability is 1 divided by the drop-rate denominator. Cumulative chance after n independent attempts is 1 minus (1 minus p) raised to n. Dry chance is the complement. Attempts for a target probability use the logarithmic inverse of the cumulative formula and are rounded up.

The diagram summarizes the same transparent calculation path used by the calculator. Replace the defaults with values for the exact method or activity you are modeling.

Source

OSRS Wiki

https://oldschool.runescape.wiki/w/Pet

Original Calciro educational diagram for the OSRS Pet Chance Calculator.

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This diagram is part of the OSRS Pet Chance Calculator.

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