Can I slow down music without changing pitch?
Yes. Leave pitch at 0 semitones and choose a tempo below 100%. The available minimum is 75% of the original speed.
TEMPO CHANGER GUIDE
Free Online Tempo Changer
Slow Down or Speed Up Music.
Learn how to slow down or speed up music without changing pitch. Compare tempo percentages, calculate a target BPM and find the right practice speed before opening the audio tool.
Open Tempo Changer on the home page
The audio tool opens on the Pitch Tempo home page.
How to change audio speed
Open the tempo changer
Go to the tempo changer on the home page and upload a supported audio file. After preparation, select Change pitch / tempo to open the editing controls.
Choose a tempo
Set a percentage from 75% to 125%. Keep pitch at 0 semitones to preserve the original key. Choose Listen preview to hear the result.
Download the edit
Choose Download full track, select a format and wait for processing. Listen to the completed file before saving it to your device.
What do the tempo percentages mean?
100% keeps the original speed. A value below 100% slows the audio down; a value above 100% speeds it up. At 75%, the recording plays 25% slower. At 125%, it plays 25% faster.
If you know the original BPM, multiply it by the tempo percentage divided by 100. To reach a target BPM, divide the target by the original BPM and multiply by 100. The result must fit within the available 75–125% range.
| Tempo | New BPM | Approximate duration |
|---|---|---|
| 75% | 90 BPM | 5:20 |
| 80% | 96 BPM | 5:00 |
| 100% | 120 BPM | 4:00 |
| 125% | 150 BPM | 3:12 |
The five-minute limit applies to the uploaded source. A slower exported version can be longer.
Slow down music for practice, or speed up a recording
A music speed changer can give you more time to hear a guitar phrase, learn a piano passage or rehearse a vocal entrance. Start at a comfortable pace within the available range, then move closer to 100% as the passage becomes familiar.
For faster playback, try a modest increase before choosing the maximum. This BPM changer preserves pitch when the pitch control is unchanged, so a faster track does not automatically make voices higher.
The preview uses the first 20 seconds of source audio. At 80%, that excerpt plays for about 25 seconds; at 125%, about 16 seconds. Change either setting and request a new preview before exporting the whole recording.
Set a new BPM after finding the original tempo
Read the BPM finder overview if you need an estimated starting point. In the audio workspace on the home page, analyze the track first to see tempo relative to that reading. You can also type a target such as “Set tempo to 110 BPM” in its chat, provided it falls within the permitted range.
To move the music higher or lower as well, learn about the independent pitch changer. Every edit is based on the original uploaded audio rather than repeatedly changing an earlier preview.
The Pitch Tempo home page is your starting point for both the tempo detector and the full audio speed changer workflow.
Questions before you start
Can I speed up an MP3 and download it?
Yes. Upload the MP3, select a tempo above 100% up to 125%, preview it and export the full track. MP3 and eight other output formats are available.
Does changing tempo change the length of the file?
Yes. Slower audio lasts longer and faster audio ends sooner. Approximate new duration equals original duration divided by the speed multiplier.
Do I need to find BPM before using the tempo changer?
No. Percentage changes work without analysis. Detect BPM first if you want to compare the estimated original and new tempo or request a target BPM.
Does it add reverb or loop a section?
The current editor changes pitch and tempo and exports the result. It does not add reverb or include an adjustable practice loop.
Audio formats, file limits & saved progress
Upload an MP3, WAV, M4A, AAC, FLAC, OGG, Opus, AIFF or WMA file. Each track can be up to 100 MB and 5 minutes long. A readable audio recording is required; an unsupported, damaged or protected file may not open.
- MP3
- WAV
- M4A
- AAC
- FLAC
- OGG
- Opus
- AIFF
- WMA
Start free without signing up: guests can open 3 new chats per 24 hours. A free account allows 5 new chats per hour and saves your progress. Files are uploaded to our server for processing. Guest files expire after 24 hours; audio saved to your account remains available until you remove it.
Change your track’s tempo.
Open Pitch Tempo to find your track’s BPM, try a new speed and download the result.