Create free
Free · no signup required

BPM Finder — Detect a Song's Tempo Online

Choose a song or rhythmic audio excerpt and FluxNote will analyze up to its first five minutes to estimate the tempo in beats per minute. The result appears on this page; files are temporary and automatically deleted.

Uploads and outputs are private, temporary, and automatically deleted after the job expires.
Job capability: not created
60–200 BPM rangeFirst five minutes analyzedOn-page resultNo signup

How to find the BPM of a song

  1. 1

    Choose a rhythmic excerpt you may analyze.

  2. 2

    Upload the file and confirm your rights.

  3. 3

    Wait while FluxNote measures repeating beat intervals.

  4. 4

    Review the BPM estimate and verify half- or double-time interpretations.

Find the BPM of an MP3 or music excerpt

The analyzer measures repeating changes in audio energy and compares likely beat intervals between 60 and 200 BPM. A clear, steady section normally gives the most useful estimate.

  • Analyze common audio formats and MP4 audio.
  • Inspect up to the first five minutes for a repeating pulse.
  • Return a BPM estimate directly in the browser.
  • Keep the uploaded file private and temporary.

Choose the right tool for your next step

Tool choices for BPM Finder
What you haveWhat you needTool
An MP3 or supported music fileAn estimated tempo in BPMCheck tempo above
A song with a long quiet introA shorter rhythmic excerptTrim audio before analysis
Your original video recordingIts soundtrack as MP3Extract MP4 audio

Only process media you own or have permission to use. Downloading or converting a file does not grant reuse rights.

BPM analysis examples

These examples describe suitable files and expected results. Your uploaded media stays private and is automatically deleted after the temporary job expires.

Example input

A 30-second chorus with a clear kick and snare

Example output

An on-page estimate such as 120.2 BPM

Example input

A demo recording with a consistent metronome pulse

Example output

A tempo estimate you can verify against your session metronome

Choose a section with a steady beat

Dance, pop, rock, and other recordings with regular percussion are usually easier to analyze than speech, ambient sound, or rubato performances. If a long intro has no beat, create a short excerpt that begins after the rhythm enters.

The analyzer considers tempo candidates from 60 to 200 BPM. It reports one estimate rather than changing or tagging the source file.

For an MP3 with a quiet introduction, use the audio trimmer to make an excerpt from a rhythmic section, then upload that result here. Increasing the volume cannot add a beat that is absent from the recording.

Half-time and double-time BPM results

A track at 140 BPM can have a strong perceived pulse at 70 BPM, and a 90 BPM groove can contain subdivisions near 180 BPM. Automatic detectors may choose either mathematically related interpretation.

If the number appears half or double what you expect, compare it by tapping along or checking several sections. Songs with live tempo changes do not have one perfectly constant BPM.

What happens to the uploaded song

The source is decoded only for tempo analysis and is not made public or added to a music-identification database. The result is a numerical estimate, not a downloadable copy of the song.

Temporary job data expires automatically. You should still upload only files you own, have licensed, or have permission to analyze.

Frequently asked questions

How does the BPM finder estimate tempo?

It decodes the audio, measures repeating energy onsets, and compares likely beat intervals between 60 and 200 BPM.

Why is the detected BPM half or double the expected tempo?

Music often has strong pulses at related half-time and double-time rates. Automatic analysis may select either interpretation.

Can it analyze a full song?

It accepts files up to 90 MB and analyzes up to the first five minutes. A short section with a clear beat is usually sufficient.

Does it identify the song?

No. The tool estimates tempo only; it does not match the recording against a song database.

Is the BPM exact?

It is an estimate. Live performances, tempo automation, syncopation, and quiet percussion can reduce accuracy.

Can I find the BPM of an MP3 without installing software?

Yes. Upload the MP3 in your browser and confirm your permission to analyze it. The service checks up to the first five minutes and returns an estimate on this page. No FluxNote account is required.

Does this BPM finder also find a song's musical key?

No. It estimates tempo, measured in beats per minute. It does not detect musical key, chords, or a Camelot code, and it does not identify a song by name.

Related free tools

Vocal Remover

Reduce centered vocals in a stereo song and download an instrumental MP3. Free online vocal remover with private temporary file processing and no signup.

Open tool

Audio Trimmer

Trim MP3, WAV, M4A, FLAC, OGG, or MP4 audio by entering start and end times. Free online audio cutter with private processing and no signup.

Open tool

Reverse Audio

Reverse an MP3 or audio file online and download the backwards result. Free private audio reverser for common formats, with no signup required.

Open tool

Bring your soundtrack into a new video

Explore FluxNote's video workflow for AI visuals, voiceover, music, and captions. Create a free account to get started; use audio you are permitted to use.

Explore video creation

From inspiration to your own creation

Put your next idea into action.

Videos, images and ads. One creative studio. Pick what you want to make—or try the walkthrough before you sign up.

Your ideas. Your videos. No camera required.

Turn your next story into a faceless video. Explore the workflow, then create your own in FluxNote.

  1. 01 Choose a style
  2. 02 Add your idea
  3. 03 Make it your own
Create my faceless video

Start with an account. Create at your own pace.

Loading walkthrough… Full-screen link below if needed.

Open full-screen demo

Tool access and generation allowances depend on your plan.

Create my faceless video