Music Speed Changer Online
Slow down or speed up any song from 0.5x to 2x while keeping the original pitch. Works instantly in your browser for music practice, transcription, podcasts, and lectures - no signup, no file upload.
Change song speed, free
Slow down or speed up audio from 0.5x to 2x
Adjust playback with a slider or presets. Preview the change instantly as you drag.
Change tempo without changing pitch
Preserve pitch by default so slowed or sped-up audio stays in the same key - ideal for practice, transcription, and learning.
Private, in-browser processing
Your audio is processed locally and never uploaded. No signup, no app, no subscription.
How to change a song's speed
Three steps to preview at any speed.
Open an audio file
Choose or drop an MP3, WAV, M4A, FLAC, OGG, or AAC file up to 10 minutes. It stays on your device.
Set the speed
Use a preset (0.75x, 1.25x, 1.5x...) or drag the slider from 0.5x to 2x.
Play and preview
Play instantly at the new speed. Toggle pitch preservation on or off.
What is a music speed changer?
A music speed changer adjusts the playback speed of an audio file without re-recording it. Use it to slow down fast solos for practice, speed up podcasts and lectures, or transcribe tricky passages at a comfortable tempo.
Changing speed changes the tempo - how fast the audio plays. With Preserve Pitch on, the song stays in the same key. With it off, the pitch rises when you speed up and drops when you slow down.
Unlike a slowed-and-reverb maker - which applies a fixed slow-down plus reverb as a stylistic remix - this is a utility tool: any speed, both directions, pitch preserved by default. It runs entirely in your browser and never uploads your file.
Music Speed Changer FAQ
Yes. Pitch preservation is on by default, so the audio stays in the same key when you change speed. Turn it off to hear the pitch shift with the speed.
Yes - completely free, no signup. It runs in your browser and doesn't use any server or credits.
MP3, WAV, M4A, FLAC, OGG, and AAC files up to about 10 minutes. The file is processed locally in your browser and is not uploaded.
No. The playback and speed change happen entirely in your browser. Your file never leaves your device.
From 0.5x (half speed) to 2x (double speed). Use presets for common values or drag the slider for any speed in between.
Yes. Click Download to record the speed-changed audio with the original pitch preserved, then export as MP3 or WAV. It records in real time, so keep the tab open until it finishes.
Yes. Turn on Preserve Pitch to slow down the song while keeping it in the original key - useful for learning instruments, vocals, and solos.
Yes. Slow audio to 0.5x or 0.75x while preserving pitch to transcribe fast solos, chords, or lyrics note-for-note without transposing.
Music Speed Changer vs Slowed + Reverb Maker
Both change speed - pick the one that matches your goal.
Explore more free tools
Choose an audio file and change its speed instantly
Open an audio file, choose any speed from 0.5x to 2x, and preview instantly with pitch preserved. Free, private, no signup, and no upload.