Audio tools
Pitch changer online for singing and key matching
This free pitch changer shifts a song's key without changing its speed, directly in your browser. Drop an audio file, adjust the pitch slider, and hear each change live. Your file stays on your device, with no upload. Compare against the original, then download your edit as MP3 or WAV.
Drop a song here
Space plays and pauses
How to change pitch without changing speed
Use the Pitch preset and semitone slider to transpose your audio while keeping its tempo.
- Load your audio. Drop a file into the tool or tap "Try a demo track." Playback starts so you can hear adjustments immediately. Files can be up to 10 minutes and 100 MB. Processing happens on your device, and no account is needed.
- Set the pitch. Choose Pitch, then move the pitch slider up or down in semitones. Leave speed unchanged. Use the Effect/Original switch to compare the same passage with the source.
- Download the result. Keep the full track or select a clip across the waveform. Choose MP3 or WAV, then use Download to render your selection.
Start with pitch alone. The other effects in the browser audio tools can wait until the key feels right.
Pitch settings for singing, matching keys, and voices
Start within -2 to +2 semitones for singing, and use larger shifts only when the musical goal needs them.
| Goal | Pitch setting | What to check |
|---|---|---|
| Lower a difficult chorus | -1 or -2 semitones | Sing the highest line, then check the lowest verse note |
| Raise a low backing track | +1 or +2 semitones | Check quiet notes as well as the chorus |
| Match C minor to D minor | +2 semitones | Confirm both tracks are minor and compare their bass notes |
| Match E minor to D minor | -2 semitones | Check tuning before layering the tracks |
| Higher voice effect | +5 semitones | Listen for thin vowels and sharp consonants |
| Deeper voice effect | -5 semitones | Listen for muddy words and smeared breaths |
Key matching does not align beats. Two tracks can share a key but still have different tempos. Moving the speed slider changes both tempo and pitch, like changing tape speed. Use the pitch slider when the beat must stay put.
Semitones, octaves, and the point where artifacts appear
One semitone moves every note by one chromatic step, and 12 semitones make one octave.
C to C-sharp is +1 semitone. C to D is +2. Moving a C major song up one semitone produces C-sharp major; it does not turn the song into a minor key. A scale step is different: C to D spans two semitones, while E to F spans one.
For full music mixes, stay within about four semitones when natural tone matters. This is a starting point, not a guarantee. Cymbals can turn grainy, piano attacks can blur, and stacked vocals may develop a watery edge. Back the shift off and compare a busy chorus, not just a quiet intro.
If you actually want faster playback with a higher pitch, use the speed-based song editor. For a deliberately bright, fast treatment, try the Nightcore effect instead of expecting pitch alone to create that sound.
Choose a short-video clip before judging the effect
Loop the exact video passage before settling on a pitch shift, because a clean verse can hide problems that appear in the chorus.
Drag across the waveform to select the hook, spoken line, or instrumental break. The 15 s, 30 s, and 60 s buttons provide quick clip selections. Your selection loops while you adjust the sound, so you can compare the same syllables and drum hits rather than relying on memory.
For speech, listen to the last word of each sentence. A deep setting may suit a held vowel but make a quiet ending hard to understand. For music, check the bass and cymbals together. Avoid adding bass boost just to disguise a dull pitch shift.
Download the selected clip as MP3 or WAV. Choose the full track instead if you need to place the cut yourself in your video editor.
A source-song prompt that leaves room for transposing
Ask for a clear arrangement and a comfortable vocal register when making an original you expect to transpose later.
Use this full prompt in the SoundUser song generator: Pop backing track at 100 BPM in A minor, electric piano chords, muted electric bass, dry kick and snare, sparse arrangement, no vocals, steady groove for singing practice.
The intended result is an uncluttered backing track with room for your voice. The requested key is a target, so check the generated audio before matching it with another song. If it sounds crowded, change sparse arrangement to electric piano, bass, and drums only. If your chorus still sits too high, try -1 semitone in this tool before making a larger change.
Pitch changes do not change song ownership
An effect does not change who owns a song: edits of other people's recordings are still their songs, and platforms may mute or claim them.
A lower key, a deeper voice, or a short excerpt does not remove that issue. Check the permissions for your source before posting an edit.
For an original, make a track with SoundUser and plan its hook using the short-video song generator, then adjust the audio here if needed.
Tracks you create are yours to use in your own projects, including commercial ones, under the SoundUser Terms
Frequently asked questions
How many semitones is one key?
Moving a key up to the next chromatic key is one semitone, such as C major to C-sharp major. Moving from C major to D major takes two semitones. The phrase "one key" can be ambiguous, so name the starting and target keys. Twelve semitones move the music by one octave.
Does changing pitch change the speed?
The pitch slider keeps the tempo unchanged while moving the notes higher or lower. The speed slider behaves differently: pitch follows speed, like tape playback. If your backing track must stay at the same pace for rehearsal or editing, leave speed unchanged and use only the semitone control.
How far can I shift before it sounds bad?
For a complete music mix, about four semitones in either direction is a useful starting limit for natural sound. Dense vocals, bright cymbals, and acoustic piano may reveal artifacts sooner. Solo speech can tolerate a more obvious effect if realism is not the goal. Compare the busiest passage and reduce the shift if attacks blur.
Can I change the key to sing along?
Yes. Try -1 or -2 semitones if the chorus is too high, or +1 or +2 if the melody sits too low. Sing both the highest chorus note and the lowest verse note before choosing. Lowering the whole song can fix the top note while making the bottom of your range harder.
Can I make a voice sound deeper or higher?
Yes. Try -5 semitones for an obvious deep effect or +5 for a higher voice. Start closer to the original if you want a subtler change. Pitch shifting also changes the impression of vowels and consonants, so check intelligibility. It shifts the whole recording, including any music underneath the voice.
Is my audio uploaded to a server?
No. The effects tool processes the file on your device, and your audio is never uploaded. You can load a file up to 10 minutes and 100 MB, adjust it while it plays, then render an MP3 or WAV download. No account is needed to use this browser tool.
One idea · one finished track
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