How does the size of the sun compare to earth? Astronomy Our Solar System The Sun 1 Answer Don Mac Mar 7, 2016 The diameter of the sun is about 109 times the Earth's diameter. Explanation: The Earth is really small compared to the sun. See pic. But our sun is dwarfed by some of the really big stars - see pic below. Answer link Related questions How does the sun affect our tides? What made the sun? Where did the materials come from? What is the winter solstice? What will our sun become at the end of its life cycle? What is the circumference of the sun? What is the circumference of the Earth's orbit around the Sun? How do you measure the circumference of the earth using sun angles? Does the sun circle around the earth? What is the radius of sun and earth? If the radius of the Earth's orbit around the Sun is 150 million km, what is the speed of the Earth? See all questions in The Sun Impact of this question 6707 views around the world You can reuse this answer Creative Commons License