FLAC to GSM Converter
Encode lossless FLAC as GSM 06.10 speech audio
Pristine Source
Lossless FLAC gives GSM encoding the best possible speech input — no prior artifacts.
Telephony Codec
GSM 06.10 powers global mobile networks — produce from lossless FLAC sources.
Online Encoding
No telephony libraries needed — convert FLAC to GSM in your browser.
How to convert FLAC to GSM
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose gsm or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your gsm file right afterwards
About formats
Frequently Asked Questions
GSM 06.10 is the core telephony speech codec. Lossless FLAC input produces the cleanest possible GSM-encoded voice.
Mobile networks, Asterisk PBX, VoIP gateways, and IVR systems use GSM 06.10 for speech.
No — GSM is speech-only at 13 kbps. It handles voice well but ruins music content.
Yes — lossless input means no stacked compression artifacts in the GSM output.
Upload multiple FLAC files and encode them all to GSM at once.