FREE · PRIVATE · IN YOUR BROWSER
BPM and Key Finder
Use the BPM and key finder to check tempo, musical key and Camelot codes. Analyze local songs or samples, then save your results as a table.
MP3, WAV, FLAC, M4A, AAC, OGG · up to 50 MB / 5 min per file · mono or stereo · Up to 20 files per batch. Supported codecs depend on your browser.
Your audio stays on this device. No account, credits or server upload needed.
BPM and key finder for your music library
The BPM and key finder gives you a starting point for sorting tracks. A steady drum loop is easier to read than speech or a beat with long gaps. Use the BPM and key finder to compare files, then confirm the rhythm and harmony by ear before you mix.
How to use the BPM and key finder
- 01
Choose your audio
Drop up to 20 files into the BPM and key finder. Choose songs, loops or stems from your device. Each file must be under 50 MB and no longer than five minutes. No streaming link is needed or supported.
- 02
Read each result
The BPM and key finder checks files one at a time. Read the tempo, key, Camelot code and duration in each row. An empty result means there was not enough clear evidence; it is better to check that track by hand.
- 03
Save your track notes
Use the BPM and key finder to build a small track list. Copy the table into a sheet or export a CSV. Keep the file names with their results so you can find each track in your music app.
Put the BPM and key finder to work
BPM and key finder for DJs
Use the BPM and key finder to plan the pace of a set. Nearby tempos are a useful start, but key codes are not mixing rules. Play the transition and check whether the bass lines and vocals work together.
BPM and key finder for beats
Run a rough beat through the BPM and key finder before you send it to a singer. Write the estimate in your session notes. If a result looks half or twice as fast, count the kick and snare pattern yourself.
BPM and key finder for samples
The BPM and key finder can help label a folder of loops. Keep short hits and spoken tags separate from tonal music. A single drum hit has too little rhythm for a useful tempo estimate, and may have no clear key.
BPM and key finder limits
Treat the BPM and key finder as a guide, not a final verdict. Live drums, tempo changes and thin harmony can confuse the result. Major and minor keys can share notes. Recheck uncertain tracks in your DAW with a metronome and an instrument.
The BPM and key finder runs on this device. It does not send audio to a server, change the source file or write tags into it. Close this page and the table is cleared, so export any notes you want to keep.
BPM and key finder questions
Is the BPM and key finder free?
Yes. The BPM and key finder needs no account or credits. Analysis runs in your browser. Your device does the work, so a large batch can take longer on a phone.
Which files can I analyze?
Use MP3 or WAV for broad support. FLAC, M4A, AAC and OGG may work if your browser can decode them. Only mono and stereo audio are supported. A file must pass the size and length limits.
Why does the BPM and key finder show double time?
A beat can be felt at more than one pulse. The BPM and key finder may read a 70 BPM groove as 140 BPM. Count along to the track and choose the pulse that fits your session.
Can I download an edited song?
No. This page exports track data, not changed audio. The table contains your tempo and key estimates. Keep the original files for playback or editing in a separate tool.
Try the BPM and key finder
Start with one clear loop in the BPM and key finder. Check the result against what you hear, then add the rest of your folder.
Open BPM and key finder