How do I change the speed of a song or audio file?
Add a local file, choose a preset or move the slider, and let the tool prepare the new version. Lower percentages slow the file down, and higher percentages make it play faster.
130% speed
Use the BPM Changer extension when you want to slow down or speed up streaming audio in real time and keep rehearsal moving.
Add a local file, choose a preset or move the slider, and let the tool prepare the new version. Lower percentages slow the file down, and higher percentages make it play faster.
No. This tool keeps the pitch steady while changing playback speed, so you can compare the pacing without the file drifting to a different key.
If you are unsure, start with 90% for a light slowdown, 75% for a more obvious rehearsal pace, and 125% if you want to check whether the material still feels comfortable slightly faster.
Yes. This tool handles the file locally on your device, so it never needs to be uploaded to a server.
The download button exports a WAV result generated locally after the selected change is processed.
It opens with the slider already set to 130% speed, so you can hear the pacing change right away.
Use it when you want an MP3 at 130% speed and need a clear starting point before nudging the slider manually.
If this setting feels close but not final, compare it with 140% speed or head back to the broader MP3 Speed Changer guide for manual fine-tuning.
It gives you a focused starting point inside MP3 Speed Changer instead of making you dial in the same speed from scratch every time.
Keep this quick reference nearby when you are comparing slower and faster versions. It covers what changes when speed moves, how duration reacts, and which practical playback settings musicians reach for most often.
Speed change moves playback earlier or later in time. Lower percentages slow the file down, higher percentages move it faster, and the pitch-preserving process keeps the musical key from drifting with the speed.
Slower playback gives you more time to hear detail, while faster playback shortens the file and helps you test fluency or pacing. Duration is part of the musical feel, not just a side effect.
Compare clarity, articulation, breath points, groove, and whether the phrase still feels natural at the new pace. Small changes are often enough for rehearsal work.
These are the settings musicians reach for most often when they want a quick slower-or-faster comparison without guessing from scratch.
| Setting | Multiplier | Duration | Typical use |
|---|---|---|---|
| 50% speed | 0.5x | 2x duration | Extreme slow practice when you need every entrance and subdivision to feel exposed. |
| 75% speed | 0.75x | 1.33x duration | A common rehearsal slowdown when the passage is close but still moving too quickly. |
| 90% speed | 0.9x | 1.11x duration | A small slowdown that keeps the phrase feeling musical while adding breathing room. |
| 100% speed | 1x | Same duration | Original pace for checking how the phrase really sits before or after comparisons. |
| 110% speed | 1.1x | 1.1x shorter | A gentle push when you want to test whether the material stays comfortable slightly faster. |
| 125% speed | 1.25x | 1.25x shorter | A stronger tempo lift for articulation and fluency checks once the notes already feel settled. |
| 150% speed | 1.5x | 1.5x shorter | Fast review mode when you want to pressure-test clarity and pacing. |
| 200% speed | 2x | 2x shorter | A dramatic speed jump for quick navigation or extreme fluency checks. |
Preset for setting an MP3 to 125% speed.
Preset for setting an MP3 to 140% speed.
Preset for playing music at 130% speed.
Preset for playing a song at 130% speed.
Preset for playing an instrumental at 130% speed.
Change playback speed while keeping the original pitch steady.
Change audio speed with preset anchors and nearby comparisons.
Change the speed of an MP3 with preset shortcuts and centered manual control.
Local music tools for changing key, changing speed while keeping pitch steady, keeping practice tempo steady, and sounding clear reference pitches.