Change Sample Rate and Channels
Set an audio file to the exact sample rate and channel count a platform or device requires, then download — processed in your browser.
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This resample tool sets an audio file to the exact sample rate and channel count you need — 48, 44.1, 22.05 or 16 kHz, stereo or mono — then downloads the result.
It exists for the platforms that specify: voice-over marketplaces wanting 44.1 kHz mono WAV, phone systems wanting 16 kHz, game engines wanting 48 kHz. The resampling runs in your browser.
Why Use This Resample Audio Tool?
- Four sample rates — 48, 44.1, 22.05 and 16 kHz
- Stereo or mono — downmix or upmix in the same pass
- Output format choice — MP3, WAV, FLAC and more, feature-detected
- Private — resampled in your browser, no upload
- Free, no signup
How to Resample Audio — 3 Steps
- Drop your audio file into the box above and wait for the file details to appear.
- Pick the sample rate and channel count the platform requires, plus the output format.
- Press the blue Convert button and download the resampled file.
Why Platforms Keep Asking for Specific Sample Rates
Sample rate is how many times per second the audio waveform is measured, and different corners of the audio world standardized on different numbers. Music and video live at 44.1 kHz (CD) and 48 kHz (film and broadcast). Voice-only platforms often want 22.05 or even 16 kHz, because speech carries no useful information above 8 kHz and lower rates mean smaller files. When a voice-over marketplace, phone system or game engine rejects your file for "wrong sample rate", this is the fix — and the channel requirement (mono for most voice work) usually comes with it.
The tool resamples properly rather than by cheap approximation: the audio is decoded, rendered through a resampling pipeline to your chosen rate, and re-encoded. Stereo to mono is a real downmix (both channels averaged), mono to stereo a clean duplicate. Sample rate changes use professional interpolation, so the result does not have the metallic sheen of naive decimation.
A practical warning about sample rates: do not "upgrade" for quality. Converting 44.1 kHz to 48 kHz does not add fidelity — it changes the file to satisfy a requirement, nothing more. The sensible flow is: keep the highest-quality original at home, produce a resampled copy per platform requirement, and let this tool do the copies.
Output format is your choice from the feature-detected list — WAV for the platforms that demand uncompressed, MP3 for everything else, with the bitrate control available where the format supports it. Everything runs in your browser with no upload.
Frequently Asked Questions
Whatever the platform specifies — 44.1 kHz for music, 48 kHz for video work, 22.05 or 16 kHz when a voice platform asks for it. If nothing specifies, keep the original rate.
No — it adds no detail. Higher rates exist to satisfy requirements, not to improve sound.
It is properly downmixed — both channels are averaged into one. Voice on stereo recordings ends up centered and clean.
Lower sample rates discard frequencies you cannot hear in speech anyway — fewer measurements per second means fewer bytes. That is exactly why voice platforms ask for it.
The feature-detected list — typically MP3, WAV, FLAC, AAC (.m4a) and OGG (Opus), depending on your browser.
No — resampling runs in your browser and the download comes from your device.
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