How to use the Audio Sample Rate converter
- Choose the audio file.
- Pick the new sample rate.
- Click Convert sample rate.
- Download the result.
Which sample rate?
- 44.1 kHz: CDs and most music.
- 48 kHz: video, film and most cameras. Use this to avoid sync drift in video editors.
- 16 kHz: speech recognition and voice assistants.
- 8 kHz: telephone systems and IVR prompts.
- 96 kHz: high-resolution studio work.
Format limits
Some formats only support certain rates; MP3 tops out at 48 kHz and Opus always plays at 48 kHz. When a format cannot hold the rate you choose, the tool saves WAV or FLAC instead and tells you.
Good to know
Resampling uses a long, high-quality filter to avoid aliasing. The format is kept unless it cannot hold the chosen rate, in which case WAV or FLAC is used and you are told.
Supported files
MP3, WAV, M4A, AAC, OGG, OGA, FLAC, OPUS, WMA, AIFF, AIF, AIFC, ALAC, AMR, AC3, MP2, M4B, M4R, CAF, AU, WEBA, 3GA, APE and VOC. Files up to 1 GB each.
Frequently asked questions
Does upsampling improve quality?
No. Going from 44.1 to 96 kHz makes the file bigger without adding detail. Upsample only when a system requires it.
How much does the Audio Sample Rate Converter cost?
Nothing. It is free with no registration, no watermark and no limit on how many files you convert.
Do you keep a copy of my files?
We never receive them. All processing happens on your device, so there is nothing for us to store or delete.
Can I use it on my phone?
Yes. Open the page in your phone's browser and choose a file. Phones have less memory than computers, so very large files are better converted on a laptop or desktop.