How to delete WordPress theme from dashboard 2017-2018 using this easy step by step tutorial.
If you want to delete your active theme you first need to install a new theme and then install the old theme.
To delete a WordPress theme go to dashboard then click on Appearance and then choose Theme. Then click on the theme you want to delete. In the right bottom, you see a delete button. Click on the delete button and click on och if you want to delete the theme.
I also give you advice on how to remove existing wordpress theme.