I have a problem with adding the CSV data to my QGS project with CRS set on the British National Grid EPSG:27700.

enter image description here

In turn, my points are at the beginning of the coordinate system like you see below:

enter image description here

I tried to change the CRS for this CSV input to EPSG 3857 Pseudo-Mercator or WGS84. It didn't work at all.

According the thread below:

Adding points defined by Latitude and Longitude to map using QGIS?

it looks like the QGIS doesn't recognize these point coordinates under this system.

Adding points defined by Latitude and Longitude to map using QGIS?

Moreover, it's not able to transform the On the fly to the EPSG:27700.

How can I add them properly? What am I doing wrong here?

1 Answer 1


The coordinates are clearly Lat/Lon, so you need to choose WGS 84 | EPSG:4326 as Geometry CRS while importing the file.

enter image description here

They will be projected on the fly to your project CRS for display purposes. If you want to work with them in EPSG:27700, you need to reproject the layer after you have added it in EPSG:4326. You can do this by saving the layer as... or running reproject from processing toolbox.

  • I've run reproject layer. In the target CRS should I select the EPSG:27700 British National Grid?
    – Geographos
    Mar 30, 2021 at 9:51
  • yes (need to add 12 more characters)
    – MrXsquared
    Mar 30, 2021 at 10:22
  • What 12 more characters?
    – Geographos
    Mar 30, 2021 at 10:30
  • Thannk you for that. I will try later. Although my experience learned me, that in situations as I am experiencing now the best way is set up a completely new QGIS project instead of fighting with the current problem. I will upvote your solution, as other people did. That's the best example, that something was definitely wrong with my project.
    – Geographos
    Mar 30, 2021 at 10:44
  • I tried, but it didn't work. I will do the try on another occasion definitely. Thank you very much for your help
    – Geographos
    Mar 30, 2021 at 10:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.