Step 1: Share your AMR files using the button above or by drag and drop.
Step 2: Click the 'Transform' button to start the transformation.
Step 3: Grab your converted WMA files.
AMR to WMA Transformation FAQ
How do I convert AMR audio to WMA without losing quality?
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Upload the AMR file and the converter chooses the WMA codec and bitrate to match the source. Lossless WMA (WAV / FLAC / ALAC) preserves every sample bit-identically; lossy WMA (MP3 / AAC / OGG / Opus) defaults to 192 kbps which is transparent for most ears. AMR is a narrowband speech codec running between 4.75 and 12.2 kbps, modelling the human vocal tract rather than the full audio spectrum. WMA is lossy by default, in an ASF container, with lossless and voice-optimised variants that are rarely encountered.
Is converting AMR to WMA a second round of lossy compression?
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Yes, and it is worth planning around. Both formats are lossy, so the WMA encoder is working from audio that has already been through one psychoacoustic pass, and its own decisions compound the first set. At 192 kbps or above the result is still transparent for most listening. If you have a lossless master anywhere, encoding the WMA from that instead avoids the double pass entirely.
Can I tag the WMA 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. WMA 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. WMA compressed better than contemporary MP3 encoders and remains readable by Windows Media Player and old PlaysForSure devices.
Will the WMA 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; WMA 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. WMA is unsupported almost everywhere outside Windows, and older WMA files may carry DRM that blocks conversion entirely.
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. AMR destroys music: its 8 kHz bandwidth removes everything above telephone frequencies, and no amount of re-encoding brings it back.
What bitrate will the resulting WMA file use?
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Default is 192 kbps for lossy WMA; pass-through for lossless WMA. Override to 320 kbps for audiophile or 96 kbps for voice / podcast. The choice trades file size against audible fidelity; below 96 kbps lossy artifacts become noticeable on music.
Will going from AMR to WMA reduce my audio quality?
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If AMR is lossy and WMA is lossless (e.g. MP3 → WAV), the WMA is no better than the AMR — you cannot recover information already discarded. If AMR is lossless and WMA is lossy, the WMA codec recompresses; at 192 kbps the result is transparent for most content.
Does the AMR to WMA converter keep ID3 / metadata tags?
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Yes — title, artist, album, year, track number, and album art are read from the AMR container and written into the WMA container where the format supports tags. All common targets (MP3, AAC, FLAC, OGG) handle tags fine; raw WAV does not. WMA is Windows Media Audio, Microsoft’s answer to MP3, launched in 1999 and bundled with every Windows install of that era.
Can I batch convert hundreds of AMR files to WMA?
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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 WMA keep the same sample rate as AMR?
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By default yes — 48 kHz AMR stays 48 kHz in WMA. If you need to downsample for compatibility (96 kHz → 44.1 kHz for CD burning), the sample-rate option applies high-quality resampling in the same encode pass.
Can I normalize loudness when converting AMR to WMA?
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Yes — the loudness-normalize option applies ITU-R BS.1770 / EBU R128 normalization to the WMA, targeting -14 LUFS (streaming standard) or -16 LUFS (podcast standard). Useful when batching tracks mastered at varying levels.
Will my WMA play on car stereo, iPod, and Sonos?
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MP3 plays everywhere. AAC plays on Apple, most Android, and Sonos. FLAC plays on Sonos and Android but not on older iPods. WAV plays on everything but is huge. The advanced device-preset dropdown picks a WMA codec optimized for your target hardware.
