This is an image of the Earth's moon, along with several other moons for comparison.
Click on image for full size
NASA

A Comparison of Some Major Moons, and the Earth's Moon

This is an image of the Earth's moon, shown in the center, with several other moons for comparison.

The image shows that the Earth's moon is a lot smaller than Ganymede, Callisto, and Titan. The Earth's moon is about the same size as Io, and is a little larger than Europa.

Not shown in this picture is Triton, which is also about the same size as the Earth's moon.


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Callisto

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Europa

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