How does your mass and weight change as you travel to the moon?

Your mass remains constant regardless of your location, whether on Earth or the Moon, because mass is a measure of the amount of matter in your body. However, your weight changes because weight is the force exerted by gravity on that mass. The Moon's gravitational pull is about 1/6th that of Earth's, so you would weigh significantly less on the Moon, even though your mass stays the same. For example, if you weigh 180 pounds on Earth, you would weigh only about 30 pounds on the Moon.