How to change audio sample rate — free, browser-based
- Step 1Upload your audio file — Drop your audio.
- Step 2Select target sample rate — Select target sample rate.
- Step 3Download the resampled file — Download the resampled file.
Frequently asked questions
What is the difference between 44.1 kHz and 48 kHz?+
44.1 kHz is the standard for music, CDs, and most consumer audio. 48 kHz is the standard for video, broadcast, and professional production. If your audio is for a video project or broadcast submission, use 48 kHz. For music distribution only, 44.1 kHz is standard. Many systems accept both, but matching the project standard avoids conversion artefacts in third-party workflows.
Does sample rate conversion reduce audio quality?+
High-quality sinc resampling is nearly transparent. The main risk is quantisation noise in the stopband of the anti-aliasing filter, which is typically 120+ dB below the signal — inaudible. Cheap linear interpolation resampling (as used in some basic tools) introduces more audible artefacts, which is why high-quality filters like FFmpeg's sinc resampler matter.
Can I increase sample rate to improve audio quality?+
No — upsampling (e.g. 44.1 kHz to 96 kHz) does not add frequency content above 22.05 kHz. The high frequencies in the upsampled file are the result of interpolation, not additional recorded information. Upsampling only makes sense when a downstream system requires a specific higher sample rate for compatibility.
Privacy first
All audio processing runs locally in your browser using FFmpeg compiled to WebAssembly. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.