The height above or below sea level is "elevation". Altitude is used only for distance above sea level.
The elevation or height above sea level is called altitude.
elevation
The height of a mountain peak above sea level is called its elevation.
The measure of how high a place is above sea level is called elevation.
elevation
elevation
The height of a place above sea level is called elevation.
The height above sea level of any point on Earth's surface is called its elevation.
The word you are looking for is "altitude." Altitude refers to the height or elevation above sea level.
Elevation
The elevation of a place above sea level
Elevation