This is an important question. The truth is, it differs. For any doorway pull-up bar you buy, on the product page, it should state how much weight the bar can handle. If it doesn't give you an amount I would just walk away. There are a lot of different types of doorway pull-up bars on the market that are mounted in different ways and each type of design has a different weight load. I would always be cautious. The bar I mention in this review holds up to 280lb/127kg and unofficially holds up to 420lb which is more than enough for me.