The capacity of these tables varies from model to model. The cheapest type among them can only support as little as ten or fifteen kilograms. Such models tend to use flimsy plastic materials for tabletop and legs or even fabric sheets without any considerable support. However, there are better models that can support many times that weight. A really good table can support a hundred or two hundred kilograms of weight even when you fully extend out the legs. But it shouldn’t be difficult to check the capacity of a table if you are shopping online. Usually, it will be there in the specifications.