About Us
An independent tool for players
OSRS Combat Calculator is a free fan-made planning website for Old School RuneScape players. It helps you understand your combat level, compare account builds and plan training. We are not Jagex and do not operate or represent the game.
How calculations are checked
The calculator uses the combat formula documented by the OSRS Wiki. Integer arithmetic preserves rounding boundaries. Automated tests check new accounts, level 99 limits, Prayer rounding, target routes, experience thresholds and PvP ranges. Formula explanations and planning assumptions are shown alongside the tools.
What planning results mean
Target routes change one skill at a time. Experience starts at the beginning of the entered level, so existing progress reduces the amount you need. Combat-free limits hold every other skill fixed. Training can also award Hitpoints experience. This tool does not predict damage, equipment performance, quest completion or account eligibility.
Feedback and corrections
If a result looks wrong, use the contact page. Include all seven permanent skill levels, the target or PvP setting, the result shown and the result you expected. Never send a password, login token or payment details.