Pitch Shifter — Change Audio Pitch Online
Free online pitch shifter — change the pitch of a song or voice by up to ±12 semitones without changing speed. Runs in your browser, nothing uploaded.
Drag and drop your file here or click to select
About this pitch shifter
This is a free online pitch shifter that lets you raise or lower the pitch of any audio file in semitones — from −12 (one octave down) to +12 (one octave up). By default, tempo is preserved, so the song plays at the same speed but in a higher or lower key. It's built for musicians transposing a backing track to fit a vocal range, learners practicing along in a comfortable key, singers covering songs in their own register, podcasters tweaking voice tone, and quick prank voices for video edits.
Pitch and speed are independent here, and that's the point. Pitch alone changes how high or low the audio sounds without making it longer or shorter — a song stays exactly the same length. Speed alone makes the track faster or slower (and, with naive playback, drags the pitch along). Combine them for a slowed-and-lowered remix, a sped-up TikTok edit that keeps voices natural, or a chipmunk effect when you raise both at once. All processing happens locally in your browser via SoundTouch — your master recording is never uploaded.
Range is ±12 semitones in whole-step or fractional increments. Tempo is preserved by default; toggle 'Also change tempo' if you want to adjust both at once.
When this helps
Change the key of a song for your voice
Shift a backing track or karaoke MP3 by a few semitones so the melody fits your vocal range — no need to hunt for a different version.
Practice covers in any key
Singers and instrumentalists can transpose the original recording into a key that's easier to play or sing, then play along.
Lower your voice for a podcast or voice-over
Drop a recorded voice by 1–3 semitones for a deeper, warmer tone — or raise it for a younger, brighter character.
Prank voices and meme edits
Push the pitch high for chipmunk-style speech, or far down for a comically deep voice for short video skits.
Frequently asked questions
How do I change the pitch of a song without changing the speed?
Drop the audio file, leave 'Preserve tempo' on (it's the default), and drag the pitch slider up or down. The song will sound higher or lower but stay exactly the same length. Download as MP3 or WAV when you're happy with the result.
What is a semitone?
A semitone is the smallest standard step in Western music — the distance between two adjacent keys on a piano, including the black keys. Moving up one semitone is the same as transposing a song from, say, C to C♯. It's a more musically accurate unit than 'percent', which is why pitch shifters use it.
How many semitones are in one octave?
Twelve. So +12 semitones raises the audio by one full octave (everything sounds twice as high), and −12 lowers it by one octave (everything sounds half as high). This shifter covers the full ±12 range.
Can I lower the pitch of a song to match my voice?
Yes — that's one of the most common uses. Try −2 or −3 semitones first; that's usually enough to bring a male-vocal song into a comfortable female range, or the other way around. Adjust in small steps until it sits well, then export.
Does this autotune or correct off-key singing?
No. A pitch shifter moves the entire audio up or down as one block — every note gets shifted by the same amount. Autotune is a different process that snaps individual notes to a target scale. If a singer is flat on one note, this tool won't fix that note specifically; it would shift everything together.
What audio formats are supported?
MP3, WAV, M4A, AAC, OGG, and FLAC for input. You can export the shifted result as MP3 (lossy, smaller file) or WAV (lossless, larger). Files of up to ~150 MB process comfortably in modern browsers.
Will the audio sound chipmunky or robotic?
Small shifts of 1–4 semitones sound clean and natural on most material. Larger shifts (±6 and up) start to introduce the classic time-stretch character — slightly metallic on vocals, a bit phasey on cymbals. That's a property of every pitch-shift algorithm, not a bug; use it intentionally for effect, or stick to smaller shifts for transparent results.
Can I change the key for karaoke?
Yes. Drop in any karaoke MP3 or instrumental, shift it up or down a few semitones to match the singer, and download. Because tempo stays the same, the lyrics still line up with the music — you only changed the key.