Angular Size Calculator

This Calculator Is Accurate For All Angles

Scroll Down For Instructions

Do you want to solve for:

or or

Angles will be input (or shown) as:

or or

Size and distance can be input in any units but they must be consistent.
If size is entered in inches, distance must be in inches.
If size is entered in kilometers, distance must be in kilometers, etc.

Examples for using this calculator:

Angular Size Tutorial:

Video Example:


Significant Figures >>>  

Numbers are displayed in scientific notation with the option to specify the precision by inputting a number in the box above. For easy readability, numbers between .001 and 1,000 will not be displayed in scientific format.
Internet Explorer and most other browsers, will display the numbers properly but there are a few browsers that will show no output whatsoever. If so, enter a zero in the box above. This eliminates all formatting but it is better than seeing no output at all.

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