Audio speed changer
Faster or slower. With or without pitch shift.
Change audio speed between 0.25× and 4×. Preserve the original pitch for a natural-sounding podcast/language-learning speedup, or let the pitch shift with the speed for classic chipmunk and deep-voice effects.
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Speed 1.00×
0.25× = four times longer · 4× = four times shorter. 1× is the same as the source.
Pitch handling
"Preserve pitch" keeps voices/music sounding natural while changing tempo. "Shift" changes both together — the classic tape-speed effect.
Output format
Bitrate lossy formats only
0.25× to 4×
Preserve pitch · podcast speedup
Shift pitch · chipmunk / deep
MP3 · WAV · M4A · FLAC · OGG · Opus · AAC
Up to 200 MB