# GSM to MP3 Converter Convert GSM audio files to MP3 format > Canonical page: https://elysiatools.com/en/tools/gsm-to-mp3 - **Category:** Media - **Keywords:** gsm, mp3, audio, converter, voice, speech, telephony, voicemail, transcode ## Overview The GSM to MP3 Converter allows you to easily transcode legacy GSM audio files, commonly used in telephony and voicemail systems, into the widely compatible MP3 format. By uploading your .gsm or .gsm-t files, you can customize output settings such as bitrate, sample rate, and audio channels to ensure optimal playback quality on modern media players and devices. ## Inputs - **Audio File** (file): Upload a GSM file to convert to MP3 - **Bitrate (kbps)** (select): GSM is 13 kbps. 128 kbps recommended for voice audio. - **Sample Rate** (select): Output sample rate - **Audio Channels** (select): Select output channel count - **Keep Metadata (when available)** (checkbox): Preserve title/artist tags when possible ## When to use - When you need to play legacy voicemail recordings or call center logs on modern smartphones, tablets, or computers. - When preparing telephony audio files for transcription software that does not natively support the GSM format. - When archiving old voice recordings in a highly compatible, compressed format like MP3 to save space while maintaining audio clarity. ## How it works - Upload your GSM audio file (.gsm or .gsm-t) using the file selector. - Configure your output preferences, including the target bitrate, sample rate, and audio channels (mono or stereo). - Choose whether to preserve existing metadata tags during the conversion process. - Click the convert button to process the file and download your high-quality MP3 audio. ## Use cases - Converting archived call center voice recordings to MP3 for quality assurance reviews. - Exporting legacy PBX voicemail messages to a playable format for legal or administrative documentation. - Preparing historical telephony voice samples for integration into modern digital archives or presentations. ## Frequently asked questions ### What is a GSM file? A GSM file is an audio format designed for telephony use, optimized for recording human speech like voicemails and call logs. ### What bitrate should I choose for voice recordings? A bitrate of 128 kbps is recommended for voice audio to balance file size and sound quality, though GSM itself is natively 13 kbps. ### Can I convert multiple channels? Yes, you can choose to output as Mono (recommended for voice) or Stereo, or keep the original channel configuration. ### Will I lose the metadata tags from my original file? No, if you keep the 'Keep Metadata' option checked, the converter will preserve title and artist tags when available. ### What is the maximum file size supported? The converter supports GSM audio files up to 20 MB in size. ## Related tools - [AMR to MP3 Converter](https://elysiatools.com/en/tools/amr-to-mp3): Convert AMR (Adaptive Multi-Rate) audio files to MP3 format - [Batch Audio Converter](https://elysiatools.com/en/tools/audio-batch-converter): Convert multiple audio files between different formats like MP3, WAV, FLAC, AAC, OGG, Opus with quality settings and batch processing - [Audio Codec Swap](https://elysiatools.com/en/tools/audio-codec-swap): Change the codec of an audio file within a chosen output format - [Audio Format Converter](https://elysiatools.com/en/tools/audio-converter): Convert audio files between different formats like MP3, WAV, FLAC, AAC, OGG with quality settings and volume adjustment - [MP3 to AMR Converter](https://elysiatools.com/en/tools/mp3-to-amr): Convert MP3 audio files to AMR (Adaptive Multi-Rate) format - [MP3 to GSM Converter](https://elysiatools.com/en/tools/mp3-to-gsm): Convert MP3 audio files to GSM format - [Video Audio Extract Enhanced](https://elysiatools.com/en/tools/video-audio-extract-enhanced): Extract audio from video files with advanced options - multiple formats, quality settings, and audio enhancement - [AAC to MP3 Converter](https://elysiatools.com/en/tools/aac-to-mp3): Convert AAC audio to MP3 with controllable bitrate, resampling, and channel selection ## Samples - [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio - [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [GSM Audio Sample](https://elysiatools.com/en/samples/gsm-samples): GSM encoded audio sample for telephony playback, upload, and format conversion workflows ## Related content - [Voice Codec, PCM, and Legacy Audio Compatibility Workflows](https://elysiatools.com/en/hubs/voice-codec-pcm-compatibility): Diagnose codec and sample-format mismatches, convert AMR and GSM voice files, bridge PCM and WAV, and prepare legacy DTS or DSD assets for delivery. - [Audio Encoding and Format Conversion Tools](https://elysiatools.com/en/hubs/audio-convert): Compare audio format conversion, bitrate changes, sample-rate conversion, codec swaps, and export tools in one hub for delivery and archive workflows. - [Audio Editing and Cleanup Tools](https://elysiatools.com/en/hubs/audio-utility): Compare audio trimming, silence removal, fades, mixing, and denoise tools in one hub for podcast, voiceover, and music cleanup workflows. - [Audio Preview, Tone, and Effect Generator Tools](https://elysiatools.com/en/hubs/audio-generate): Compare audio preview generation, silence creation, ringtone building, fingerprinting, loudness reports, and effect-style audio generators in one hub.