Shape of earth: Its actual shape is

Its actual shape is best described as an oblate spheroid – a sphere that is flattened at its poles and bulging at the equator due to the centrifugal force created by the planet’s rotation. While the oblate spheroid is a useful approximation, the most accurate depiction of Earth’s shape is the geoid. We would like to show you a description here but the site won’t allow us. Learn how the Earth is modeled as an ellipsoid with different parameters and datums for horizontal and vertical coordinates. Explore the history and accuracy of the ellipsoid and geoid shapes and their impact on geodesy and cartography. We have found over time that the Earth isn't a perfect sphere, but rather a spheroid made of oblate. This indicates it is mostly round, with a small levelling at the poles and an upward curve near the equator.