Pitch Changer
Change the pitch of any song instantly with a slider — from 415.3 Hz to 466.2 Hz
Frequently Asked Questions
Everything you need to know about pitch shifting and audio tuning.
A pitch changer (also called pitch shifter) is a tool that raises or lowers the pitch of an audio file without changing its speed or tempo. It lets you transpose music up or down in semitones or adjust the reference frequency (e.g. from A4 = 440 Hz to 432 Hz).
Upload your MP3 or WAV file to KeyPitch, adjust the pitch slider to your desired frequency, preview the result, then click Download. Your pitch-shifted file opens directly in the KeyPitch Audio Studio where you can fine-tune further and export.
Pitch is how high or low a note sounds. Speed (tempo) is how fast the audio plays. Traditional methods change both together — if you speed up a record, the pitch goes up. Modern pitch changers like KeyPitch use algorithms to shift pitch independently from speed, so the song stays at the same tempo.
440 Hz is the international standard tuning frequency for the note A4 (the A above middle C). Most modern music is tuned to A4 = 440 Hz. Some musicians prefer alternative tunings like 432 Hz (considered warmer) or 415 Hz (baroque pitch). KeyPitch lets you retune any audio between 415.3 Hz and 466.2 Hz.
432 Hz is an alternative concert pitch where A4 is tuned to 432 Hz instead of the standard 440 Hz. Many listeners find it more natural and relaxing. Some believe it resonates better with natural frequencies. With KeyPitch you can convert any song from 440 Hz to 432 Hz instantly.
The relationship between Hz and semitones is logarithmic, not linear. Around A4 = 440 Hz, one semitone up is about 466.2 Hz and one semitone down is about 415.3 Hz. The formula is: frequency = 440 × 2^(semitones/12). KeyPitch's slider covers a full semitone range in each direction.
Yes! KeyPitch uses advanced time-stretching algorithms to shift pitch independently of speed. Your song keeps the same tempo and duration while the pitch moves up or down. This is perfect for matching a song to your vocal range or transposing to a different key.
Install the KeyPitch Chrome Extension. It adds a pitch and speed control panel directly on YouTube. You can shift the pitch of any video in real time by semitones — no download needed. Perfect for musicians practicing along with YouTube tutorials or backing tracks.
Absolutely. Each semitone of pitch shift corresponds to one musical key. If a song is in C major and you shift it up 2 semitones, it becomes D major. KeyPitch's Audio Studio lets you shift pitch by exact semitones (up to ±12) so you can transpose to any key.
Yes, you can upload, preview and adjust pitch for free. The full Audio Studio gives you additional controls including fine-tuned semitone shifting, speed change, reverb, bass boost, 8D audio, and more.
KeyPitch pitch changer supports MP3, WAV, M4A and MP4 files up to 50 MB and 10 minutes long. Once in the Audio Studio, you can export your pitch-shifted audio as MP3 or WAV.
Upload your backing track or song, then use the pitch slider to match your comfortable vocal range. A common technique is to lower the pitch by 1-2 semitones if the song is too high, or raise it if it's too low. Preview to check, then download and practice.
Yes. Pitch shifting works on any audio — music, voice, podcasts, sound effects. Lowering the pitch can make a voice sound deeper and more authoritative. Raising it creates a higher, brighter tone. This is useful for content creators and producers.
Concert pitch is the reference frequency that all instruments in an ensemble tune to. The modern standard is A4 = 440 Hz, but it has varied throughout history — baroque orchestras used ~415 Hz, and some European orchestras tune to 442-443 Hz. KeyPitch lets you retune recordings to match any concert pitch.
Small pitch shifts (1-2 semitones) are virtually transparent. Larger shifts may introduce subtle artifacts. KeyPitch uses high-quality time-domain algorithms (SoundTouch) to minimize quality loss. For best results, start with a high-quality source file (WAV or high-bitrate MP3).
Upload a sample or loop, shift its pitch to match your project's key, then download. KeyPitch's Audio Studio also offers reverb, bass boost, speed change, and 8D audio — all in the browser. It's a quick way to pitch-match samples without opening a DAW.