Resample a file to match a target sample rate — useful when a video project, game engine, or hardware device requires a specific rate like 48,000 Hz.
The Sample Rate Converter changes how many samples per second a recording uses — for example 48 kHz video audio to 44.1 kHz for a CD, 96 kHz masters down to 44.1 kHz, or speech to 16 kHz for speech-recognition models.
The tool reads the file’s real sample rate from its header and asks the browser to decode at that rate, so a 96 kHz file is not silently resampled before you start — the rate shown is the rate it truly has.
Resampling uses the browser’s built-in resampler for a high-quality, anti-aliased conversion. Lowering the rate discards everything above the new Nyquist limit (half the rate): 44.1 kHz keeps up to 22.05 kHz, 16 kHz keeps up to 8 kHz. Raising the rate cannot add detail that was never recorded — it only represents the same audio with more samples.
Convert 44.1 kHz to 48 kHz for video projects.
Downsample 48/96 kHz to 44.1 kHz.
Make 16 kHz mono files for ASR and TTS pipelines.
8 kHz for phone systems.
| Rates | 8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96 kHz |
|---|---|
| Source rate | Read from the file header |
| Output | WAV 16/24/32-bit or MP3 |
44.1 kHz for music, 48 kHz for video; higher rates are for production.
No.
Yes — a lower sample rate caps the maximum frequency the file can represent (roughly half the sample rate), so converting down does lose some high-frequency detail. Converting up doesn't add detail back.
Sample rate is a property of the raw audio data, and WAV preserves it exactly with no other quality trade-offs. Use the Audio Converter afterward if you also need MP3 or another format.
This tool runs entirely in your browser using the Web Audio API. Nothing is uploaded, stored or shared — there is no server to send your file to, so it works offline once the page has loaded.
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