The distance from the center of the Earth to the Sun is not constant, as Earth's orbit is elliptical.

Here are some ways to express the distance:

* Average Distance: 149.6 million kilometers (93 million miles)

* Astronomical Unit (AU): 1 AU. This is a standard unit of measurement used for distances within the Solar System.

* Perihelion (closest point): 147.1 million kilometers (91.4 million miles)

* Aphelion (farthest point): 152.1 million kilometers (94.5 million miles)

So, depending on where Earth is in its orbit, the distance can vary slightly.