The surface gravity on Uranus is 8.69 m/sec2 compared to 9.78 m/sec2 squared on Earth. In other words, a object in free fall above the surface of Uranus will increase in speed … by 8.69 metres a second, every second.   If Earths gravity (g) is rated as 1, then that of Uranus is 0.89 or 89% of Earth's.