Sign up ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Given a pair of coordinates, I would like to have a range for both long/lat, that would cover, say 100 meters.

How can I do this?

share|cite|improve this question

1 Answer 1

Assuming the earth is a perfect sphere of radius $R$, an arc of $\theta$ radians in a great circle will have length $\theta R$. So you want to solve $\theta R= 100 \, \text{m}$ for $\theta$.

Now the earth is not a perfect sphere and so the radius varies. See a table here.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.