GIS
Spatial projection
| ESPG Code | Projection | Unit |
|---|---|---|
| ESPG:4240 | THAILAND | Degree |
| ESPG:4326 | WGS84 | Degree |
| EPSG:3857 | Meter | |
| ESPG:32647 | WGS84 / UTM zone 47N - THAILAND | Meter |
BMA zone
["กรุงเทพมหานคร", "นครปฐม", "นนทบุรี", "ปทุมธานี", "สมุทรปราการ", "สมุทรสาคร"]
Degree / meter conversion
KM = DEGREE * 111.319
DEGREE = KM / 111.319
Example
15 km = 0.135 degree
10 km = 0.09 degree
6 km = 0.054 degree
4 km = 0.036 degree
3 km = 0.027 degree