Strength and Burden
Your burden, and the total weight you can carry, are determined by your strength and weight. Since your weight is determined by 3 parts strength against 1 part constitution, strength is a major factor in the equasion. Unlike most other things, at high strength increasing it by one point has a greater influence than increasing at low strength: the difference between the weight you can carry at strength 8 and 9 is less than the difference between strength 22 and 23.
As you might have noticed before, worn items count towards your burden less than carried items, and held items count more. To be precise: worn items count for half their weight, items held in one hand count double, and items held in two hands count for 1.5 times their weight.
After some experimenting I constructed this little calculator. Just
fill in your strength and weight, and how much you want to carry,
hold and wear, and hit compute. The computer will then
calculate your burden. If you don't know your weight, insert your
con and press 'guess' - this will give an estimation for your
Please realise that this computer is still in a development stage, and not properly tested. I hope it will be in a margin of 1 burdenpoint from the real result for all values. This calculator has not been tested for strength below 8 and above 23.
There is nothing really special about being 100% burdened; it is quite possible to get above that. This is because wearing or holding objects does not affect the maximal weight a character can carry. So if you're only holding something really heavy, you can still pick up other things far above 100% burden, while 60% burden can be too much if you're wearing everything.
Burden itself is mostly important because it affects your ability to dodge (very low burden is preferred for dodge users) and because being burdened gives a dex penalty, starting at -1 at 50% burden, and losing one extra dexpoint each 25%.