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AMR to WAV Converter

Convert AMR files to WAV format online for free. No installation or registration required.

Quick Answer: How to Convert AMR to WAV

AMR is the Adaptive Multi-Rate codec built for mobile phone voice recording, while WAV is an uncompressed audio container that stores sound exactly as digitized. Converting AMR to WAV wraps or re-encodes your audio into the WAV structure, but be aware: quality lost when the AMR was created stays lost — a WAV made from a lossy source is a perfect copy of an imperfect original. Run it free at practicalwebtools.com/convert/audio/amr-to-wav: drop in your AMR, adjust settings if you like, and download the WAV — no signup, no upload, everything stays on your device.

AMR vs WAV: Which One and Why

AMR is the Adaptive Multi-Rate codec built for mobile phone voice recording, standardized by 3GPP in 1999 for GSM and 3G voice calls. WAV is an uncompressed audio container that stores sound exactly as digitized, created by Microsoft and IBM in 1991 for Windows 3.1 multimedia. People reach for AMR mainly for phone voice memos, call recordings, answering machines, while WAV is the usual choice for studio recording and mixing, sound effects, archiving masters. AMR's headline strength: tiny files — a minute of voice is under 1 MB. WAV's: bit-perfect audio with zero generational loss. On the other side of the ledger, AMR limitation: unusable for music — the codec discards everything above ~3.4 kHz (phone-line bandwidth) — and WAV limitation: enormous files — a 4-minute song is ~42 MB at 44.1 kHz stereo.

How to Convert AMR to WAV Online

  1. 1

    Add your AMR file: Drag and drop it into the converter, or click to browse. AMR files up to the size limit are accepted, and nothing is uploaded — processing runs locally in your browser.

  2. 2

    Set WAV options: The converter re-encodes into WAV, which is none (typically) — CD-quality stereo WAV runs 10.6 MB per minute. Set quality to maximum since you're going lossless — no reason to trim bits you already have.

  3. 3

    Download the WAV: Conversion runs on your device. When it completes, download the WAV file — repeat for as many files as you need, free and unlimited.

Key Facts

  • AMR: standardized by 3GPP in 1999 for GSM and 3G voice calls, lossy, speech-only — from 4.75 to 12.2 kbps.
  • WAV: created by Microsoft and IBM in 1991 for Windows 3.1 multimedia, none (typically) — CD-quality stereo WAV runs 10.6 MB per minute.
  • Converting AMR → WAV cannot restore what the AMR encoding already discarded — the WAV is a faithful copy of the AMR, not of the original recording.
  • AMR strength: tiny files — a minute of voice is under 1 MB.
  • WAV strength: bit-perfect audio with zero generational loss.
  • AMR limitation to know: unusable for music — the codec discards everything above ~3.4 kHz (phone-line bandwidth).
  • WAV limitation to know: enormous files — a 4-minute song is ~42 MB at 44.1 kHz stereo.
  • Under the hood: WAV can also wrap compressed codecs, but "WAV" almost always means PCM — pulse-code modulated raw samples

Format Background

AMR

AMR — standardized by 3GPP in 1999 for GSM and 3G voice calls. AMR locks to one of 8 bitrates and can switch mid-file — old phones used this to maintain calls as signal degraded

WAV

WAV — created by Microsoft and IBM in 1991 for Windows 3.1 multimedia. WAV can also wrap compressed codecs, but "WAV" almost always means PCM — pulse-code modulated raw samples

Frequently Asked Questions

Will converting AMR to WAV lose quality?

The WAV output preserves everything present in your AMR file — but AMR is lossy, speech-only — from 4.75 to 12.2 kbps, so information discarded when that file was made is gone for good. You get a bit-perfect copy of what you have, not a restoration of the original recording.

Are my files uploaded anywhere during AMR → WAV conversion?

No. This converter runs on WebAssembly inside your browser — your AMR file is read from disk, processed by your device's CPU, and the WAV is written back locally. There is no server upload at any point, which also means no size-based throttling or waiting in queue.

Does converting AMR to WAV restore lost quality?

No — and this trips up a lot of people. AMR is lossy, speech-only — from 4.75 to 12.2 kbps: the data it discarded at creation time cannot be reconstructed by any converter. A WAV from a AMR source sounds exactly as good as the AMR, no better. The reasons to convert anyway are compatibility, editing headroom, and future-proofing — not restoration.

Do I need to install anything to convert AMR to WAV?

No installation. The converter is a web page — open it in any modern browser on Windows, macOS, Linux, iOS, or Android. AMR decoding and WAV encoding both run via WebAssembly at native-adjacent speed.

Does the converter keep metadata (title, artist, cover art)?

Where the WAV container supports it, standard tags are carried across. WAV can also wrap compressed codecs, but "WAV" almost always means PCM — pulse-code modulated raw samples

Related Converters

AMR to MP3AMR to OGGAMR to AACAMR to M4AMP3 to WAVOGG to WAVAAC to WAVM4A to WAV

Further reading

Guides and explainers on the Practical Web Tools blog cover audio and video formats in depth — or browse every audio converters pair from the hub.