Step 1: Drop your AMR files using the button above or by deposit and leave.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Receive your converted FLAC files.
AMR to FLAC Conversion FAQ
How do I convert AMR audio to FLAC without quality loss?
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Upload the AMR file and our converter chooses the FLAC codec / bitrate combination that matches the source. Lossless target (FLAC = WAV / FLAC / ALAC) preserves every sample; lossy target (FLAC = MP3 / AAC / OGG) defaults to 192 kbps which is transparent for spoken-word audiobooks and most music.
Does converting AMR to FLAC improve the audio quality?
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No, and it is worth being blunt: nothing can. The AMR already discarded detail during its original encode, and wrapping what remains in a lossless FLAC preserves exactly that — no more. The file gets several times larger and sounds identical. It is still the right move before editing, because FLAC will not add a second generation of artefacts when you export. FLAC gives you WAV fidelity at half the size, with proper metadata tags and embedded artwork, which is why it dominates lossless music libraries. AMR destroys music: its 8 kHz bandwidth removes everything above telephone frequencies, and no amount of re-encoding brings it back.
Can I tag the FLAC with artist and album information?
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Yes, and it is a genuine gain over AMR, which has nowhere dependable to store any of it. FLAC carries title, artist, album, year, track number and embedded cover art in the container itself, so a music library files it correctly without a manual pass.
Will the FLAC play in my car or on older hardware?
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Often not. AMR is decoded by essentially everything, including car head units and elderly players; FLAC needs software that knows the codec, which standalone hardware frequently does not have. If the destination is a car stereo or a portable player, that is a strong argument for staying on AMR. FLAC is still several times larger than a good lossy file, and Apple’s ecosystem only added support recently and grudgingly.
Why does music sound so poor in this conversion?
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Because one side of it is a speech codec rather than a music codec. It models the human vocal tract and discards everything outside telephone bandwidth, which is fine for a voice memo and destructive for anything with instruments in it. Converting away from it cannot restore the missing frequencies — they were never encoded in the first place.
What bitrate does the FLAC file use?
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Default is 192 kbps for lossy FLAC; pass-through for lossless FLAC. Override to 320 kbps for audiophile or 64-96 kbps for spoken-word audiobooks (transparent for voice, halves the file size).
Will going from AMR to FLAC reduce my audio quality?
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If AMR is lossy and FLAC is lossless (e.g. MP3 → WAV), the FLAC file is no better than the AMR — you can't recover information that's already been thrown away. If AMR is lossless and FLAC is lossy, expect the FLAC codec to recompress; at 192 kbps this is transparent for most content.
Does the AMR to FLAC converter keep ID3 / metadata tags?
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Yes — title, artist, album, year, track number, album art, and chapter markers (important for audiobooks) are read from AMR and written into the FLAC container where the FLAC format supports tags. M4B audiobook structure round-trips into M4B and AAX → M4B output.
Can I batch convert hundreds of AMR files to FLAC?
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Yes — drop a folder of AMR files in and we process them in parallel. Premium has more parallel workers and no per-file size cap, so a 500-file batch finishes in minutes rather than tens of minutes.
Will the FLAC keep the same sample rate as AMR?
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By default yes (48 kHz AMR → 48 kHz FLAC). If you need to downsample for compatibility (e.g. 96 kHz → 44.1 kHz for CD burning) the advanced sample-rate option does this with high-quality resampling.
Can I normalize loudness in the AMR to FLAC step?
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Yes — the loudness-normalize option applies ITU-R BS.1770 / EBU R128 normalization to the FLAC output, targeting -14 LUFS (streaming standard), -16 LUFS (podcast standard), or -23 LUFS (audiobook standard). Useful when batch-converting tracks with varying mastering levels.
Will the FLAC play on my car stereo / iPod / audiobook app?
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MP3 plays universally. AAC plays on Apple, most Android, Sonos. FLAC plays on Sonos and Android, less well on older iPods. M4B audiobooks play with chapter navigation on iOS Books, Audiobookshelf, and Smart Audiobook Player. The advanced options include device presets.
