Compress WAV
Convert WAV to MP3 for up to 90% smaller file size — free, no signup.
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How to compress WAV
- Upload your WAV file (up to 50 MB).
- Choose a target sample rate and bit depth.
- Click 'Compress WAV' — takes 5-20 seconds.
- Download the smaller WAV.
Quick fact about WAV
WAV is uncompressed — the only way to reduce size without converting to MP3/FLAC is to lower the sample rate or bit depth. For CD-quality music, 44.1 kHz 16-bit is already optimal.
Why compress WAV?
WAV is uncompressed — every sample of the original recording is preserved, which makes files large. The main ways to compress WAV without changing format are: (1) lower the sample rate (e.g., 48 kHz → 44.1 kHz, or 96 kHz → 48 kHz), and (2) reduce the bit depth (e.g., 24-bit → 16-bit). This matters when a DAW expects WAV but size is a concern.
Technical details
| Input format | WAV (PCM) |
| Output format | WAV (PCM) |
| Sample rates | 44.1, 48, 96 kHz |
| Bit depths | 16-bit or 24-bit |
| Typical reduction | 10-50% (depends on target) |
| Engine | libsndfile |
| Max file size | 50 MB per file |
| File retention | Auto-deleted after compression |
How the conversion works
The compressor reads the WAV file, downsamples the audio to the target sample rate, and reduces the bit depth if selected. Output is a smaller WAV that still opens in any DAW or audio editor.
When to compress WAV
- Converting Hi-Res WAV to CD quality for distribution.
- Reducing 24-bit WAV to 16-bit for sharing.
- Preparing WAV files for broadcast playback.
- Reducing storage for a large WAV library.
- Standardizing WAV files at 44.1 kHz 16-bit.
- Preparing WAV for devices that only support CD quality.
- Reducing file size before emailing WAV.
Quality considerations
Downsampling from 96 kHz to 48 kHz is transparent for playback. Reducing bit depth from 24-bit to 16-bit is transparent for playback but loses editing headroom. For CD-quality audio, 44.1 kHz 16-bit is the standard.
Limitations and caveats
- WAV files can't compress much without converting to MP3/FLAC.
- Downsampling is irreversible — keep the original for editing.
- Reducing bit depth loses editing headroom.
- For significant size reduction, use FLAC (lossless) or MP3 (lossy).
- Only uncompressed PCM WAV supported.
Compatibility
- Output WAV opens in every audio editor and player.
- Works with Audacity, Logic, Pro Tools, Reaper, Adobe Audition.
- Standard PCM WAV — universally supported.
- Accepted by every audio production platform.
- Ideal for distribution and archival.
Tips for best results
- 44.1 kHz 16-bit is CD quality — universal and compact.
- 48 kHz is standard for video and broadcast.
- 96 kHz is Hi-Res — downsample to 48 kHz for size.
- For significant reduction, use FLAC instead (lossless, ~50% smaller).
- Keep the original for editing — downsampling is irreversible.
Compression levels explained
| Level | Size reduction | Best for |
|---|---|---|
| Light (96 kHz → 48 kHz) | ~50% | Hi-Res → standard |
| Medium (48 kHz → 44.1 kHz) | ~8% | Broadcast → CD |
| High (24-bit → 16-bit) | ~33% | Studio → distribution |
| Maximum (96k/24 → 44.1k/16) | ~75% | Hi-Res → CD quality |
Common problems and fixes
- WAV is barely smaller after compression
- WAV is uncompressed — significant reduction requires converting to FLAC or MP3. Lower sample rates give modest savings.
- Audio quality is audibly worse
- Only happens at very aggressive downsample (e.g., 96 kHz → 22 kHz). Stay at 44.1 or 48 kHz for transparent results.
- File doesn't open in my DAW
- Check the DAW's supported sample rates. Some very old DAWs require 44.1 kHz specifically.
Frequently asked questions
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Sources and references
Last reviewed: 2026-10-01