Audio

AAC → WAV

Learn about the formats: What is AAC? What is WAV?

Convert your compressed AAC media files to the uncompressed WAV format for professional editing or high-fidelity playback. This tool is perfect for users who need to prepare audio for systems that do not support lossy codecs.

AAC is a lossy media container designed for efficient storage and streaming, while WAV is an uncompressed, lossless container widely used for raw audio data. When you convert AAC to WAV, the file is decoded into a linear PCM stream. Because AAC uses lossy compression to discard data, this process does not restore the original quality of the recording; instead, it simply wraps the existing decoded audio into a larger, uncompressed structure.

Converting from AAC to WAV will not improve audio quality, as the information lost during the initial AAC encoding cannot be recovered. Expect your file size to increase significantly after the conversion.

Tips

Use WAV if you need to perform multi-track editing in DAWs like Audacity or Adobe Audition.
Check your source AAC bitrate; converting a low-bitrate file to WAV will result in a large file that still sounds like a low-quality recording.
Ensure you have sufficient disk space, as uncompressed WAV files are significantly larger than their compressed counterparts.

Common use cases

Preparing audio tracks for professional video editing software that requires uncompressed WAV.
Converting incompatible AAC files to a format that can be burned onto an Audio CD.
Integrating audio into older legacy hardware or specialized radio broadcast systems.

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File formats: what to choose

A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.

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Audio

Music, podcasts, voice recordings, and sound effects.

Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS

Advantages

+ FLAC and WAV preserve full quality for editing
+ MP3 and AAC are universally compatible
+ OPUS delivers great quality at low bitrates

Disadvantages

− Uncompressed WAV files are very large
− Lossy formats cannot be restored to original quality
− DRM-protected files may not convert

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Images

Raster and vector graphics for web, print, and photography.

Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF

Advantages

+ WebP and AVIF offer excellent compression for the web
+ PNG keeps transparency and sharp edges
+ SVG scales without quality loss

Disadvantages

− RAW and TIFF files are large and slow to share
− JPEG loses quality on every re-save
− Some formats are not supported in older browsers

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Documents

Office files, PDFs, ebooks, and plain text.

Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT

Advantages

+ PDF locks layout for printing and sharing
+ DOCX and ODT are easy to edit collaboratively
+ Plain text works on any device

Disadvantages

− PDF is hard to edit without special tools
− Complex layouts may shift after conversion
− Scanned PDFs need OCR for editable text

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Video

Clips, streams, screen recordings, and movies.

Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG

Advantages

+ MP4 (H.264/H.265) plays almost everywhere
+ WebM is efficient for web embedding
+ MKV can hold multiple audio and subtitle tracks

Disadvantages

− High-resolution video needs lots of storage and bandwidth
− Re-encoding always takes time and may reduce quality
− Some codecs require licensing for commercial use

Frequently asked questions

No. Since AAC is a lossy format, the audio data was already discarded during the original compression. Converting to WAV simply changes the container without restoring the lost fidelity.

AAC uses sophisticated compression algorithms to shrink file size. WAV is uncompressed, meaning it stores every sample of the audio data without reduction, leading to a much larger file size.

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