Circumference-at-Latitude Calculator

Calculate the circumferences of circles that are sections of a sphere with a given equatorial circumference at given latitudes.

miles
Use the period (.) as the decimal marker. Do not use a mille separator (i.e. no commas).
In case you wanna divide each measure by something.
°
Separate multiple entries with spaces. Use the period (.) as the decimal marker. Measures below -90 or above 90 will be ignored.