OSRS Combat Level Calculator

Enter your Attack, Strength, Defence, Hitpoints, Ranged, Magic and Prayer and this returns your Old School RuneScape combat level, the unrounded value behind it, and which of the three styles is actually being counted. It then walks each skill upward to find the exact level every one of them would have to reach to gain you one combat level, which is the question the formula is usually being asked. Skills that cannot move your combat level at all, however far you train them, are named as such. This is the pre-Evolution of Combat formula that OSRS launched with in 2013; RuneScape 3 uses a different one.