Science

Moon — approximate diameter — diameter from rounded radius

≈ 3480 km

The selected diameter from rounded radius for Moon — approximate diameter is 3480 km (approximate reference).

Published reference measurement · Catalogue uniruler-preview-2026-10-19-r3

What is being measured?

Derived by doubling NASA’s approximate 1,740 km radius. This rounded size reference is not a precision lunar shape model.

Use the named object, variant and dimension. A manufactured or natural object can differ from this reference.

Dimension
diameter from rounded radius
Reference value
3480 km
Evidence
Published reference measurement
In metres
3480000 m
Variant
Derived from the NASA Moon Facts rounded radius

Put the length in perspective

One Moon — approximate diameter represents approximately 40,700,000 card lengths measured end to end. This is a length ratio; it does not calculate how the objects pack or fit.

Moon — approximate diameter · 3480000 m

Metre · 1 m · too small to see

Foot (international) · 0.3048 m · too small to see

One of each reference, on the same linear scale. Very small lengths may not be visible. This compares length, not area or physical fit.
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