Comparison of Two Apparent Sizes

Size comparison thumb-moon

Calculator for angular diameter or apparent size of two objects and comparison of the sizes. The angular diameter is calculated from the actual size and distance. Please enter these two values to calculate a comparison of the sizes.

Size objekt A:
Distance objekt A:
Size objekt B:
Distance objekt B:

Decimal places:
Angular diameter objekt A: °
Angular diameter objekt B: °

Objekt A appears times as large as objekt B.
Objekt B appears times as large as objekt A.

Example: the thumb is 2.5 cm wide and 60 cm from the eye. The moon is 3474 km wide and an average distance of 384400 km. This makes the thumb appear 4.6 times larger.

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