Free Online Pitch Changer
Change the pitch of a song or any audio file by up to ±12 semitones without changing speed. Music pitch changer and key shifter — runs entirely in your browser, free, no signup, no upload.
What does this online pitch changer do?
Use this music pitch changer and key shifter to raise or lower an audio file's pitch in semitones while keeping the original duration intact. Useful for transposing a song to your vocal range, practicing covers in your key, or matching a backing track to a singer's range.
Music pitch changer with independent pitch & tempo
Unlike speed-up tricks (cassette / vinyl style), this preserves duration. A 3-minute song stays 3 minutes after shifting — change pitch without changing speed, or change speed without changing pitch.
Audio pitch changer: full ±12 semitone range
Cover an entire octave up or down. ±5 to ±7 semitones is the typical range for karaoke key changes; ±12 is a full octave for extreme transposition.
Change the pitch of a song in your browser
Vocal-only, instrumental, full mix, video audio — the algorithm handles all. Processing happens locally using soundtouchjs and Web Audio; your file never leaves your device.
Online pitch changer FAQ
What is a semitone?
A semitone is the smallest standard pitch interval in Western music — one piano key (white or black) to the next. 12 semitones = 1 octave.
Can I use this as a key changer for my vocal range?
Yes. If the song is in C and you sing better in G, shift down by 5 semitones. Use BPM & Key Finder first to detect the original key, then transpose accordingly.
Why does a big pitch shift sound weird?
Shifting ±7 semitones or more starts to sound artificial. Best results are within ±3 to ±5 — most karaoke transpositions sit comfortably in this range.
Does this work as a music pitch changer for video files?
Yes — drop a video file (MP4 / MOV), we extract the audio track and shift its pitch, then export as MP3, WAV, or M4A. Re-mux into the video using any standard editor.
Is the pitch shifter actually free?
Yes — fully free, no signup, no upload, no credit cost. All processing runs locally in your browser, so it costs us nothing to serve.