How do I convert latitude and longitude to meters in C2????

Hi guys, i have a big problem and i not found nothing here in the forum or in the Google to help me.

So, lets go.

Look the problem:

I have the initial distance (Example):

Latitude: -22.5457785

Longitude: -44.5447771

The final distance:

Latitude: -22.548887

Longitude: -44.55080

I did this script:

But im not getting the 100% correct distance. The diference is between 8-11%.

How can i fix this? Somebody knows a better way to calculate distance using latitude and longitude? Its very important to my project.

Or if somebody know a good plugin that i can work inside them. The Google maps is cool, but dont allow this.

PS: The GPS latitude and longitude are receiving info from Geolocation of construct.

Thanks all and sorry the bad english.

I suspect you're falling for the classic floating point numbers trick.

https://www.scirra.com/blog/141/common- ... nd-gotchas

Scroll about halfway down to "Expecting math calculations to be exact"