Is there a way to display one second latitude and longitude grid lines on Google Maps?

2 Answers 2


There is a graticule script at https://github.com/myshen/google-maps-v3-earth-map-type/blob/master/graticule.3.js

A demo and possible the latest graticule v3 script version are at http://www.bdcc.co.uk/Gmaps/ll_grat_v3_demo.htm. Depending on your zoom level the latitude and longitude grid lines are drawn with more or less detail.

There is another version of the graticule script at https://github.com/alexcheng1982/google-maps-gridlines/blob/master/src/google-maps-gridlines.js. No idea what is fixed there.

This is not exactly what you want, because the seconds are still displayed in decimal values. It is a matter of extending the graticule script _.prototype.decToLonSex and _.prototype.decToLatSex functions to also calculate the seconds in their sexagesimal value and to change var decmins and var sexmins to match exactly one second (=1÷60≅0.0166667).

I did adapt the graticule script to display the grid at 0.0005 degrees precision in most detailed view. Your request for a 1 second grid is almost equivalent to a grid at 0.000277778 degrees, which comes close. For inspiration have at look at this more detailed grid demo at http://crashplan.probackup.nl/stiphout/google-maps-with-coordinate-grid.html


You can read this article, where was roughly explained how to prepare the grid lines in any location on the World.


  • 2
    Since the images require a login, a short description here would be helpful. Commented Feb 28, 2019 at 20:55
  • Hi, I know the problem, all comes from WP migration. I'll fix it and let U know. Thanks
    – Geographos
    Commented Mar 2, 2019 at 17:35
  • @CWHolemanII try now please. I have restored this article recently. Rgds,
    – Geographos
    Commented Mar 10, 2019 at 22:04
  • @MKR the link doesn't work now. Commented Apr 19, 2021 at 3:26
  • Really? I've tried and it's fine. Try now please.
    – Geographos
    Commented Apr 19, 2021 at 8:57

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