In terms of radius, the Sun is about 109 times larger than Earth. The diameter of the Sun is approximately 864,948 miles while the diameter of Earth is only 7,926 miles. It is necessary to line up the Earth end-to-end 109 times to fit across the length of the Sun.
Speaking in terms of volume, 1,300,000 Earths fit inside the Sun. In relative terms, think of Earth as being the size of the head of a pin and the Sun as being the size of a basketball.
In terms of mass, the Sun weighs approximately 333,000 times more than Earth.