Adventurers carry a lot of gear. When that quantity becomes extreme, it might be enough to slow you down and otherwise hamper your capabilities. The amount you carry should rarely be an issue, and you don’t need to calculate the weight your character is hauling around unless it’s likely to matter. More often, you’ll need to know how much weight you can push or drag along the ground—are you strong enough to slide the statue covering the trapdoor? This information is contained in your Strength score. Multiply your Strength score by 10. That’s the weight, in pounds, that you can carry around without penalty.