Change Audio Speed Online — Slow Down or Speed Up Music
An audio speed changer that adjusts playback from 0.05× to 10× without affecting the pitch. Ideal for music practice, transcription, and language learning.
How to Change Audio Speed
1
Upload your audio file (drag and drop or click to browse)
2
Move the speed slider to your desired playback rate
3
Click the button to process — done in seconds
4
Download your speed-adjusted audio file
Slow down or speed up any audio file while keeping the pitch natural
Drop audio or video here
MP4, WEBM, MOV, MP3, WAV, M4A, OGG, FLAC, AAC, M4B, WMA, AIFF, OPUS, CAF, MKV, AVI, WMV, FLV, M4V, 3GP, TS, MTS, M2TS, VOB, MPG, MPEG, OGV ·
File:
Duration:
Size:
Source 0:00
0:00
0:00
Drag across the wave to select a section · click to seek · Alt or right-drag for a guaranteed selection
Result 0:00
Set a speed or add a section — the result appears here
50%
0:00 / 0:00
Speed
1.00x
At this speed, speech may be hard to follow and quality can dip slightly — that's normal for strong speed changes.
Keep original tone when changing speed
Change speed on part of the file
Want to speed up or slow down just one fragment (say, 10 seconds) and keep the rest untouched? Just drag the fragment right on the waveform and set its speed (or click "Add section" if you prefer). Drag a section's edges to resize, or use ↻ to loop it. Export downloads the WHOLE file: that section is changed, everything else stays as it was.
No sections yet. Drag on the waveform to change speed only in that part (the rest of the file stays unchanged).
BPM
—
Original
Target BPM:
Auto-calculate speed from target BPM
Playback repeat (A-B)
A: — B: —
Smooth transition at loop start/end
Training Mode
Gradually increase speed for practice. Perfect for musicians.
Current: 0.50x Progress: 0%
Keyboard Shortcuts
Space Play / Pause
← Seek back 5s
→ Seek forward 5s
↑ Speed +0.05x
↓ Speed -0.05x
[ Set loop point A
] Set loop point B
R Reset speed to 1x
M Toggle metronome
Published
Updated
