Drop Audio File Here
MP3, WAV, FLAC, OGG
Change the Key or Speed of Any Song
Shift pitch from -12 to +12 semitones with fine-tune cent control, and adjust speed from 0.25x to 2x — independently. Slow down a solo without changing its key, or transpose a song without changing its length. Preview instantly, then export in any format. Works on Windows, Mac, Linux, Chromebook, iPhone, and Android, all in the browser.
Transpose a Song to Your Vocal Range
If a song is too high or too low for your voice, move the semitone slider up or down until the chorus sits comfortably. A capo-style shift of +2 or +3 puts most male vocalists in a friendlier range; -2 or -3 helps if the original is too high to belt.
Slow Down Guitar Solos and Piano Runs to Learn by Ear
A fast solo is easier to transcribe when it's slower. Use the speed slider to drop to 0.5x while keeping the original key — every note stays in tune but plays at half speed. Once you have the notes under your fingers, bring the speed back up.
Make Nightcore and Slowed-and-Reverb Edits
Nightcore is +3 to +5 semitones (faster, higher — the classic anime-edit sound). Slowed-and-reverb is -2 to -4 semitones (slower, lower — the lo-fi / TikTok sound, though the reverb itself would be added in a DAW). Preview on the live slider, then export as MP3 or WAV for upload.
Speed Up Lectures, Audiobooks, and Podcasts
Move the speed slider to 1.5x or 2x to listen faster without the pitch shifting up. Good for catching up on lecture recordings, audiobooks, and long interview-style podcasts.
Slow Down Native Speech for Language Learning
Use the speed slider to slow a podcast or conversation to 0.5x–0.75x while keeping the pitch natural. Every syllable becomes clear without the chipmunk or deep-voice effect. Work your way back up as you improve.
Semitone Precision
Shift pitch from -12 to +12 semitones with fine cent control for perfect tuning.Real-Time Preview
Hear the result instantly in your browser before committing to an export.All Formats
Export as MP3, WAV, FLAC, or OGG. Works on desktop, mobile, and Chromebook.Frequently Asked Questions
Drop the audio file, move the semitone slider to transpose up or down (each step is one semitone, like one fret on a guitar), and click Preview to hear it. When it sounds right, pick an output format and click Export.
Yes. Use the speed slider to slow down or speed up audio independently of the pitch slider. The exported file uses high-quality time-stretching so the pitch stays constant even at 0.5x or 2x speed.
Nightcore is a style where a song is sped up and pitch-shifted upward, typically by +3 to +5 semitones, creating a higher, more energetic sound popular in anime edits and gaming montages. Move the pitch slider to +3 to +5, preview, and export.
Move the pitch slider down -2 to -4 semitones for the slowed, deeper sound. This tool handles the slow-down; the reverb portion is added in a separate audio editor like Audacity or a DAW.
Yes. Any modern browser — Chrome, Firefox, Safari, or Edge — on Windows, Mac, Linux, Android, iPhone, or Chromebook. No app install needed.
You get ±12 semitones of range on the main slider and ±50 cents (half a semitone) of fine-tune, for a total resolution of one cent. That's precise enough to match a detuned instrument or an older recording that drifts from standard A=440.