The circumference of Mars around its equator is approximately 21,344 kilometers (about 13,300 miles). This is based on Mars having an equatorial diameter of about 6,792 kilometers (4,222 miles), and using the formula for circumference C=π×dC=\pi \times dC=π×d, where ddd is the diameter
. Mars is not a perfect sphere but an oblate spheroid, so its polar circumference is slightly smaller, around 21,244 kilometers (13,200 miles)
. The equatorial circumference is the commonly referenced value when discussing the size of Mars. In summary:
- Equatorial circumference: ~21,344 km (13,300 miles)
- Polar circumference: ~21,244 km (13,200 miles)
This makes Mars roughly half the size of Earth in terms of circumference
