So what does Earth weigh? Earth’s weight is sextillion (1,000 trillion) metric tons, and it is actually gaining weight. That’s 5,972,000,000,000,000,000,000 tons and gaining! Scientists refer to this measurement as the Earth’s mass instead of weight since weight is the result of Earth’s gravitational pull on another object, and the Earth cannot pull on itself! As the Earth orbits the Sun, it is weightless. If the Earth were placed on the Sun, it would weigh more than if it were placed on Jupiter, the largest planet in the solar system but much smaller than the sun. Yet, Earth (or any other object for that matter) would have the same mass regardless of where it is located.