WhatsMyBitrate

WhatsMyBitrate checks an audio file's bitrate, codec, sample rate, and frequency content, with an optional spectrogram.

whatsmybitrate.com
WhatsMyBitrate homepage screenshot

About WhatsMyBitrate

WhatsMyBitrate is a web tool for checking the audio quality of a file. Users upload an audio file, and the site reports its codec, sample rate, channel layout and duration, along with an estimated bitrate, a lossy or lossless classification, and a result for the frequency content. The site's stated approach is to measure where the audio's frequency content ends and compare that point with the ceiling set by the sample rate (the Nyquist limit), rather than relying on the bitrate written in the file's metadata. A straight, unchanging cutoff is presented as a sign of a lossy transcode, and a cutoff that moves with the music is presented as a sign of a variable-bitrate encoder.

An optional spectrogram of the full track is available. The homepage describes it as a color map of frequency content over time. The homepage states that uploaded files are processed briefly for analysis and then discarded, and that nothing is stored or shared. The site also offers a debug log of each analysis.

Key features

  • Estimated bitrate based on the frequency content of the audio
  • Identification of codec, sample rate, channel layout and duration
  • Comparison of the audio's frequency ceiling with the Nyquist limit
  • Lossy or lossless classification of the uploaded file
  • Optional spectrogram of the full track
  • Debug log of the analysis
Best for: Music producers, audio engineers, podcasters and listeners who want to check whether a file's stated bitrate or lossless label matches its actual frequency content.
Good for
  • Reads the frequency content of the audio instead of relying only on the file's stated bitrate
  • Shows both the stated bitrate and an estimated bitrate, so the two can be compared
  • Includes an optional spectrogram for visual inspection of the full track
Watch out for
  • Analysis requires uploading the audio file to the site

WhatsMyBitrate at a glance

Type
Website
Pricing
Not confirmed. Check the site
Platforms
Web
Open source
Not stated
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

WhatsMyBitrate alternatives

Tools and sites you could use instead, ranked by how closely they match.

Popular in Music Tools

Well-known listings from the same topic.

All 114

WhatsMyBitrate FAQ

Does the tool rely on the bitrate listed in the file?
No. The homepage says the tool measures the frequency content of the audio and compares it with the Nyquist limit. It also reports the stated bitrate separately from its estimate.
What happens to a file after it is uploaded?
The homepage states that files are processed briefly for analysis and then discarded, and that nothing is stored or shared. The site does not describe any further detail about its handling of files.
How does the tool detect a lossy file that has been renamed or converted?
According to the homepage, a lossy encode often leaves a hard, straight cutoff in the frequency content at the same point for the whole track, while a natural roll-off fades gradually. A variable-bitrate encoder may leave a cutoff that steps up and down with the music.
Is something wrong or out of date?

Tell us and an editor will check it.

Own this website?

Claim the listing and suggest updates yourself. An editor checks every claim first.

Claim this listing