You would weigh the most on any planet that has the most powerful gravitational force. The more powerful the gravitational force, the more you would weigh. The object with the most powerful gravitational force in our solar system is the Sun. This means you would weigh the most if you were on the Sun. However, you would not be able to stand on the Sun because it is too hot and does not have a solid surface. The planet in our solar system with the second-strongest gravitational force is Jupiter. Therefore, you would weigh more on Jupiter than you would on any other planet except for the Sun.