100% local
AUDIO

Convert WMA
to AMR

Right-sized output for the use case.

Converting from WMA to AMR aligns the file with the encoding choices the downstream pipeline expects. The result is a deliverable that fits naturally into the destination workflow.

— Drop area

WHY CONVERT

Why convert WMA to AMR

01

Right-sized output for the use case

Converting from WMA to AMR aligns the file with the encoding choices the downstream pipeline expects. The result is a deliverable that fits naturally into the destination workflow.

02

Acceptance by downstream tools

AMR is the format most receiving systems expect for this kind of content. Converting upstream avoids the rejection and silent re-encoding that often happen when WMA reaches an unprepared pipeline.

03

Portable, predictable file format

AMR is well documented and decodable by long-lived tooling, which matters for archives, deliverables, and any file that needs to outlive the software that created it.

— How to convert

WMA to AMR in three steps.

  1. 01

    Open LocalConvert

    Visit this page on any modern browser — no install, no signup, no plugin.

  2. 02

    Drop or select your WMA file

    Drag your WMA into the drop area, or click to pick one from your device.

  3. 03

    Click Convert

    Conversion runs entirely in your browser. When it's done, your AMR file downloads to your device.

QUALITY & FIDELITY

Quality and fidelity

  • Lossy to lossy: a second generation of compression artifacts is possible.
  • Metadata is dropped: the target format does not carry it natively.
Transparency WMA ✗ AMR ✗
Color depth 16-bit stereo audio unknown
Metadata preserved ✗

FORMAT SPECS

Format specifications

WMAAMR
Extensions.wma.amr
MIME typesaudio/x-ms-wmaaudio/amr
Introduced19991999
MaintainerMicrosoft3GPP
Magic #30 26 B2 75 8E 66 CF 1123 21 41 4D 52
SpecView spec ↗View spec ↗

COMPATIBILITY

Where these formats work

WMA

Windows
Native
macOS
App
iOS
App
Android
App
Chrome
—
Firefox
—
Safari
—
Edge
Native

Why LocalConvert

How LocalConvert compares

CategoryLocalConvertCloud converters
PRIVACYFiles never leave your device. The whole pipeline runs in your browser via WebAssembly.Files travel to a remote server, sit in queue storage, and may be retained for analytics or moderation.
COSTFree, no signup, no daily quotas.Often free for small files; paid tiers for batch / large / commercial use.
LIMITSLimited only by your device's memory and CPU. Uncompressed WAV stems handled comfortably on desktop.Typical 100 MB to 1 GB per-file caps, plus rate limits.
— The formats
From · WMA

Windows Media Audio

Microsoft's proprietary lossy audio format.

Typical uses
Legacy Windows audio libraries.

To · AMR

AMR

AMR is a file format supported by LocalConvert.

— FAQ

Frequently asked.

Is WMA to AMR conversion free?

Yes. LocalConvert is completely free, with no signup and no per-file or per-day limits.

Do my files get uploaded anywhere?

No. WMA to AMR conversion happens entirely inside your browser using WebAssembly — your file never leaves your device.

What's the maximum file size?

There's no fixed cap — the practical limit is your device's available memory. Very large files may take longer or fail on low-RAM devices.

Does it work offline?

Yes — once the page has loaded, WMA to AMR conversion works without an internet connection. Re-open the page once to cache it.

Will conversion preserve quality?

LocalConvert uses the industry-standard tools (FFmpeg, ImageMagick, Pandoc) — quality matches what professionals use on the command line. Lossy formats will still lose some quality on each re-encode.

— Related

Or convert these.

WMA 3G2WMA 3GPWMA AACWMA AC3WMA AIFWMA AIFC
Browse all conversions
REFERENCES

Format references

WMA

AMR

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Last verified:

100% local conversion.

WMA to AMR is processed in your browser with WebAssembly. No upload, no tracking, no limits. Your file never leaves your device.