WMA to AMR - Online Audio Converter

Convert WMA to AMR online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert WMA to AMR

[+] Drop WMA audio here or click to select WMA

Output format

AMR (AMR-NB)

Mode[i]

Simple Advanced

Quality[i]

Sample Rate[i]

Channels[i]

About WMA to AMR

Convert WMA to AMR. WMA is Microsoft's audio codec paired with Windows Media workflows. AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. Tuned for voice calls, so music loses detail by design..

Why convert WMA to AMR?

Smaller files with AMR lossy compression.
Keep quality where supported.
Private, no upload - runs in your browser.

WMA vs AMR

Codec	WMA v2	AMR-NB
Compression	lossy	lossy
Sample behavior	Quality set by bitrate	Quality set by bitrate
Typical use	WMA is Microsoft's audio codec paired with Windows Media workflows.	AMR encodes narrowband speech for GSM calls at 12.2 kbps and below.

When not to convert WMA to AMR

Skip AMR for archival masters: lossy compression discards detail, so keep the WMA original.
Keep a master copy: repeated exports stack small losses, so archive WMA before batch AMR shares.

Limits

Starting point: WMA - WMA is Microsoft's audio codec paired with Windows Media workflows. Copy-protected store files cannot be converted; use DRM-free sources. Tuned for voice calls, so music loses detail by design. Encode AMR (AMR-NB) from WMA at 256k for music or 128k for speech, starting from the master.

How conversion works

Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.

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FAQ

How do I convert WMA to AMR?

Drop your WMA file onto this page, choose quality and codec settings, then click Convert. The result downloads as AMR instantly. All processing runs in your browser.

What codec is used for AMR?

The default codec for AMR is AMR-NB. You can change audio parameters in Advanced mode.

How do you store my files?

We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.