Gregory's ServerOne on-going project here at OpenCage HQ has been to expose more of our internal tools and utilities.
Need to find the distance between two pairs of coordinates?
https://opencagedata.com/tools/distance-between-two-points
 3 comments
 @harry_wood @opencage yes, agree, that would be an improvement. For now I have added to the top of "well-intended suggestions made by people not paying us money" list  |
@opencage You could make it linkable somehow. Dynamically update a hash in the URL containing the two coords.
I was recently realising I should do the same for my similar calculator tool: https://harrywood.co.uk/other/linear-time-calculator/