Moon vs Venus: size comparison
Moon: 3,475 km. Venus: 12,104 km. Both silhouettes are drawn at the same scale.
Size ratio: ×3.5
Moon
3,475 km
What is measured Mean diameter of the Moon
It drifts away from Earth by about 3.8 cm a year.
Source : Wikipedia — Moon
Venus
12,104 km
What is measured Diameter of Venus
It is nearly Earth's twin in size, at 12,104 km across.
Source : Wikipedia — Venus