GSRT to AMR Converter
Convert your gsrt files to amr online & free
Grandstream ring-tone files
Adaptive Multi Rate
How to convert GSRT to AMR
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to amr"
Choose amr or any other format you need as a result (more than 200 formats supported)
Download your amr
Let the file convert and you can download your amr file right afterwards