convert latitude and longitude to northing and easting using javascript?

Question

Hi I am working with google maps for the first time... I am getting lattitude and longitude but I want them to be converted to northing and easting using javascript and I can't find any approch for it...

http://trac.osgeo.org/proj4js/ – JLRishe Jun 20 '16 at 11:03 — JLRishe, Jun 20 '16 at 11:03

score 0 · Answer 1 · answered Jun 20 '16 at 10:48

A related question was asked here Convert Eastings/ Northings to Longitude/ Latitude?

By following the link in one of the comments, I managed to find this, which may be useful to you. http://www.uwgb.edu/dutchs/UsefulData/ConvertUTMNoOZ.HTM (See the source for the in-line js and ask for permission if you want to use it).

score 0 · Answer 2 · edited May 23 '17 at 12:08

As JLRishe said, You can use proj4js to convert lonlat from google maps projection to utm.

Source projection is EPSG:3857 (Google Maps projection)

Your target projection should be like this

"+proj=utm +zone=<zone number> +ellps=WGS84 +datum=WGS84 +units=m"

Here is algorithm that calculates zone number.

Or you can convert point to MGRS and take first 1-2 numbers and first letter.

var zone_number = new proj4.Point([lon,lat]).toMGRS().match(/\d{1,2}[A-Z]{1}/)

convert latitude and longitude to northing and easting using javascript?

2 Answers2