Audio Sample Rate Converter

Convert sample rate locally; input codec support depends on the browser decoder.

Choose audio file

Output sample rate

Input rate

—decoded sample rate

Duration

—kept approximately constant

Choose an audio fileOfflineAudioContext performs browser-native resampling; output is 16-bit PCM WAV.

Nyquist & render-size audit

Verify target Nyquist bandwidth, sample-count ratio and estimated PCM16 WAV size before a new render.

Resampling evidence

Manual source rate (Hz)

Manual duration (s)

Manual channels

Use the tool above, then refresh this audit.

Audit uses the visible inputs plus the assumptions shown here.

Source fidelity & reproducibility audit

Independently decode the selected local audio, fingerprint the source, inspect signal evidence, and rebuild the current processing plan from visible controls. This verifies browser-visible source and transformation math; it does not certify codec quality or mastering compliance.

Choose audio in the tool above, then refresh this source audit.

Browser-local source probe. Audio never needs to leave this page for this audit.

Audio processing cluster

Verify the source before trusting the render

Decode locally, confirm sample rate, channels, duration and level evidence, then apply the transformation. Keep codec, browser decode and export-format limits explicit.

Start: Audio Editor Inspect a File

All 24 audio tools

Sample RateResample rate, Nyquist and output frames Stereo → MonoDownmix, correlation and cancellation risk Speed ChangerDuration, pitch and resampling behavior Loop MakerLoop boundaries, seam and repeated duration Frequency AnalyzerFFT resolution and spectral evidence Bass BoosterLow-shelf gain and clipping headroom Audio JoinerClip order, transitions and output duration Loudness AnalyzerLUFS planning, peak and dynamics

Practical guide and verification

Resampling creates new samples

Changing sample rate is not just editing a file header. Proper conversion reconstructs the signal and calculates samples on a new time grid, usually with filtering to control aliasing.

Downsampling needs filtering

When reducing sample rate, frequencies above the new Nyquist limit cannot be represented correctly. A good resampler applies an anti-alias filter rather than simply dropping samples.

Common mistake

A higher sample rate does not restore frequencies or detail that were absent from the source. Upsampling can be useful for workflow compatibility, but it cannot recreate lost information.

Codec and measurement boundaries

Browser decoding differs across Safari, Chrome, Firefox, iOS, and Android. Rendered edits are exported as WAV unless a tool explicitly states another supported container. Loudness analysis is a practical BS.1770-style estimate rather than a certified meter, and sample clipping checks do not replace true-peak oversampling.

Review resampling as a new render

Changing the output sample rate invalidates the previous artifact. The signal audit shows rate, duration, output peak and rendered WAV size before download.