How it works
- Drop your audio file. WAV, AIFF, FLAC, MP3, OGG or M4A up to 500 MB — its current sample rate and bit depth are detected locally.
- Choose the target. Sample rate (44.1, 48, 88.2, 96 or 192 kHz), bit depth (16, 24 or 32-bit float) and output format (WAV, AIFF or FLAC).
- Convert and download. When you reduce the bit depth, triangular dither is applied automatically to avoid quantization distortion.
Features
- All the standard rates. 44.1, 48, 88.2, 96 and 192 kHz — the rates that DAWs, video workflows and distributors actually ask for.
- Bit depth with automatic dither. 16-bit, 24-bit or 32-bit float, with triangular dither applied automatically whenever the depth is reduced.
- Honest about quality. The tool tells you upfront: going higher doesn't improve the sound, it's for compatibility. Going lower just makes the file smaller.
- 100% in your browser. Your audio never leaves your computer — the conversion runs locally with ffmpeg.wasm.
FAQ
Is this sample rate converter free?
Yes. Anonymous users get 5 free uses per day across AudioKit's free tools — no account needed. A use is only counted when you launch the conversion; loading a file and reading its current format is free. AudioKit Premium removes the daily limit.
Is my audio file uploaded to a server?
No. The file is decoded, resampled and re-encoded entirely in your browser with ffmpeg.wasm and never leaves your machine. The only network call is a tiny anonymous counter that tracks your daily free quota.
Should I use 44.1 or 48 kHz?
Match your destination. Music distribution and CDs live at 44.1 kHz — most streaming distributors expect it. Video, film and broadcast work at 48 kHz, so audio destined for a video editor or a YouTube production workflow should be 48. Both sound identical to human ears; the point is avoiding an extra resample down the line, so convert once, directly to the rate your destination needs.
Does a higher sample rate or bit depth improve my audio?
No — and the tool says so right on the page. Upsampling can't invent detail that was never captured: a 44.1 kHz file converted to 96 kHz sounds exactly the same and just takes more space. The honest uses are compatibility (a DAW, a platform or hardware that requires a specific rate) and conformity (delivering the format a client asks for). Going lower, on the other hand, genuinely reduces file size.
When is dither applied, and what are the format limits?
Dither (triangular) is applied automatically whenever the bit depth is reduced — say from 24-bit or 32-bit float down to 16 — to avoid quantization distortion; it's never applied when converting to 32-bit float, where it's not needed. Output formats are the PCM family: WAV and AIFF support 16, 24 and 32-bit float, FLAC supports 16 and 24 (32-bit float doesn't exist in FLAC). Compressed inputs like MP3 are decoded and exported as WAV.