This blog is part of site where you can find unit converters, calculators and other information focused on units of measurement. See menu on the left.


Since 1970 April 22 is known as International Earth Day designed to inspire awareness and appreciation for the Earth’s environment and popularize knowledge about our Planet.

Founded by the organizers of the first April 22 EarthDay in 1970, Earth Day Network promotes environmental citizenship and year round progressive action worldwide. Earth Day Network is a driving force steering environmental awareness around the world. Through Earth Day Network, activists connect change in local, national, and global policies. Earth Day Network’s international network reaches over 17,000 organizations in 174 countries, while the domestic program engages 5,000 groups and over 25,000 educators coordinating millions of community development and environmental protection activities throughout the year. Earth Day is the only event celebrated simultaneously around the globe by people of all backgrounds, faiths and nationalities. More than a half billion people participate in Earth Day Network campaigns every year. []

To celebrate EarthDay 2009, we have added some ‘Earth Facts’ in the table below.
If you are not familiar with the units given in the table or you just want to get other units, click on the value to get to the unit converter.

Earth Fact In meters Additional Info
Aphelion 152,097,701,000 1.0167103335 AU
Perihelion 147,098,074,000 1.0000001124 AU
Semi-major axis 149,597,887,500 0.9832898912 AU
Mean radius 6,371,000
Equatorial radius 6,378,100
Polar radius 6,356,800
Circumference equatorial 40,075,020
Circumference meridional 40,007,860
Circumference mean 40,041,470
Earth Fact In Meters/sec Additional Info
Orbital Speed (Average) 29,783 107,218 km/h
Escape velocity 11,186 40269.6 km/h
Equatorial rotation velocity 465.1 1,674.36 km/h
Earth Fact In square kilometers Additional Info
Surface 510,072,000 100%
Land Surface 148,940,000 29.2%
Water Surface 361,132,000 70.8%
Earth Fact Celsius Fahrenheit
Min Surface Temperature -89 -128.2
Max Surface Temperature 57.7 135.9
Mean Surface Temperature 14 57.2
Earth Fact Unit
Volume 1.0832073*1012 km3
Mass 5.9736*1024 kg
Surface Pressure 101.3 kPa
Orbital Period 365.256366 days
Sidereal rotation period 23h 56m 4.100s

Dictionary (Definition):
Aphelion the point in its orbit where a planet (Earth) is farthest from the Sun (opposite of perihelion)
Perihelion the point in its orbit where a planet (Earth) is closest to the Sun (opposite of aphelion)
Equatorial Radius radius measured from the center of the Earth to the point on the Equator.
Polar Radius radius measured from the center of the Earth to the polar.
Circumference equatorial Earth circumference measured along the Equator.
Circumference meridional Earth circumference measured through the poles.
Sidereal rotation period Average Earth day.
Orbital Period Of the Earth The amount of time it takes the Earth to travel once around its orbit.

Happy Earth Day!

Tags: ,

Comments are closed.