The "surface gravity" is less on Uranus.
Gravity is a correlation of mass. Uranus is many times larger than Earth. Therefore, the gravity on Uranus is much stronger than Earth's gravity.
Planets with a smaller surfae gravity than Earth are Mercury, Venus, Mars, and Uranus.
Uranus's gravity is 90% that of Earth's, so if you weigh 100 lbs it's pretty simple, you would weigh 90 lbs on Uranus. You wouldn't last long there, though.
Mars has less gravity.
It doesn't. Mercury, Venus, Mars, and Pluto have less gravitational acceleration at their surface than Earth has. That leaves only Jupiter, Saturn, Uranus, and Neptune with stronger gravity.
The "surface gravity" is slightly less than on Earth.
Uranus being extremely massive compared to Earth surprisingly has less gravity than Earth. The low density of Uranus makes Uranus have low gravity. If someone were to stand on Uranus, they would experience 89% of the gravity on Earth.
The gravitational field near the "surface" is about 8.69 meters/second2 (= 8.69 newton/kilogram). For comparison, Earth's gravity field near its surface is about 9.82 meters/second2. Please note that the gas planets, including Uranus, don't really have a surface like Earth does.
You are suggesting a dimensionless scale in order to compare gravities, but you are leaving the nature of the scale a little fuzzy. However, making a comparison of Earth's and Uranus' gravities, we find that the surface gravity of Earth (.997 g's) and Uranus (.886 g's) are very close. To the nearest unit of your scale, we could conclude that the gravity of Uranus is equal to 1. Uranus is much more massive than Earth; about 14.5 times as massive. But Uranus is much less dense, with a volume of about 63 Earths. This accounts for the surface gravity being slightly less than that on earth; an earth explorer on the surface would be much farther from the planet's center of gravity than on earth. The explorer would want to do plenty of homework before descending to the surface. Uranus is a 'gas' giant, but it probably is more icy slush than gas.
Earth is not the most dense planet.The density of Earth is only 5.515 g/cm3 , butthe density of planet Kepler-70b (in the Cygnus constellation) is 64 g/cm3 !See Sources and related links below.
Yes, there is more gravity on Jupiter than on Earth. Jupiter is a much larger and more massive planet than Earth, so it has a stronger gravitational pull. This means that the force of gravity on Jupiter is greater than on Earth.
Weight is based on the gravitational force of the planet.On Uranus you would weigh only about 89% of the weight on earth.This despite Uranus having a mass which is 14% larger than earth, the gravity is is less because it is not a very dense planet.At 89%, you would feel a little lighter, but probably not enough to be noticed.