We know about the rotation of the earth on its own axis in 24 hours. But the earth is also orbiting the sun in certain orbits. This speed is about 6,000 miles per hour or 108,000 kilometers. Although the Earth orbits the Sun in an elliptical orbit, the orbit can be considered circular in order to reduce mathematical complexity. The distance of the Sun from the Earth or the radius of this circular orbit ( r), 9 , 29 , 55 , 606 miles or 14 , 95 , 96 , 60 kilometers. Therefore, the circumference of a circular orbit can be deduced from the formula 2 x π xr . It is 564 million miles or 940 million kilometers which the Earth travels in about 358 days and 6 hours. From here the speed of the earth can be taken out. The earth is orbiting the sun at a speed of 6,626 miles per hour or 1,08,226 kilometers.