What the OSRS DPS calculator includes
The full app supports equipment slots, combat skills, prayers, potions and other buffs, monster defence and attributes, special attacks, defensive reductions, loadout comparisons, damage distributions and time-to-kill views. It is designed for PvM setup comparisons where small gear or prayer changes matter.
How to use the calculator
- Use the calculator above and select a player loadout.
- Choose equipment, combat style, skills, prayers and optional buffs.
- Select the monster and adjust its relevant defensive settings.
- Read the result table, then use the comparison and distribution views to understand the tradeoff.
OSRS DPS Calculator FAQ
What does the OSRS DPS Calculator compare?
It compares Old School RuneScape loadouts made from equipment, skills, prayers and buffs against selected monsters, then reports damage per second, accuracy, hit distributions and average time to kill.
How does the combat simulation work?
The calculator runs full OSRS combat formulas entirely in your browser, computing effective attack levels, maximum hit values, target defence rolls, multi-hit distributions, and expected time-to-kill distributions.
Does the calculator need an account or login?
No account or download is required. The calculator runs completely in a modern browser and its local app engine is served directly by Eovant.
Which mechanics and bosses are supported?
Supports all major Old School RuneScape bosses, slayer monsters, raids (ToA invocation scaling, CoX challenge mode, ToB), special attack weapons (Fang, DWH, BGS, Claws), demonbane bonuses, and elemental spell weaknesses.
Old School RuneScape and RuneScape are registered trademarks of Jagex Limited. Eovant provides independent gaming tools and fan-made utilities and is not affiliated with or endorsed by Jagex Limited.