How to tune a vocal online in 3 steps
- 01
Record or open a vocal
Record with your microphone, or use Open file to load a vocal recording. Try a demo first if you want to hear the effect before working with your own voice.
- 02
Set the key, scale, and strength
Pick a root note and a scale - major, minor, chromatic, a pentatonic, or blues - then set correction strength anywhere from a subtle polish to a hard, obviously tuned effect.
- 03
Render preview, then download
Click Render preview to hear the tuned vocal, use the Original/Processed toggle to A/B against the untouched recording, then use Download audio once you're happy with the result.
What you can do with this vocal tuner
- Correct pitch to any root note from C to B, across major, natural minor, chromatic, major pentatonic, minor pentatonic, or blues scales.
- Dial correction strength from 0 to 100%, from a natural-sounding polish at low settings to a hard, obviously tuned autotune effect at 100%.
- Detect pitch automatically using a YIN pitch tracker built for monophonic vocals - one voice at a time, not a full mix.
- Leave unvoiced sounds and silence untouched, so breaths and consonants pass through without being pulled toward a pitch that was never there.
- Add vocal reverb to sit the corrected vocal into a mix rather than leaving it dry.
- Compare corrected and original takes instantly with the Original/Processed A/B toggle before committing to a download.
- Process up to 60 seconds of vocal per pass, which covers a verse, hook, or short phrase in one go.
What does an online vocal tuner do?
An online vocal tuner listens to a monophonic vocal recording - one voice, one note at a time - and nudges each note toward the nearest pitch in a key and scale you choose. Audio Lab's vocal tuner runs this pitch correction entirely in your browser using a YIN pitch tracker, a well-established method for finding the pitch of a single voice, so nothing is sent to a server to process.
How noticeable the correction is depends entirely on the strength setting. At low strength, off notes are nudged gently toward pitch while natural vibrato and slides mostly survive. At full strength, every note snaps hard and instantly to the scale, producing the tight, obviously processed autotune effect you've probably heard on plenty of recordings.
Choosing a key, scale, and strength
Match the key and scale to the song you're working with - if you already know the key, set it directly; if not, try a few until wrong notes stop standing out. Strength is the setting that decides how it sounds: subtle strength corrects wandering pitch while keeping the performance feeling human, and higher strength moves toward the deliberately synthetic, robotic sound some genres use as a style choice rather than a fix.
| Setting | What it does | Typical use |
|---|---|---|
| Key & root | Sets the tonal center notes are pulled toward | Match to the song's key |
| Scale | Major, minor, chromatic, pentatonics, or blues | Match to the song's mode |
| Strength | How hard pitch snaps to the nearest scale note | Low for natural, high for a stylized effect |
| Vocal reverb | Adds space around the corrected vocal | Light to taste |
Monophonic detection and unvoiced sound
Pitch detection here is built for monophonic audio - a single voice, one note at a time, with no other instrument or a second singer layered into the same track. Feed it a full band mix or a duet and the tracker can't reliably tell which pitch belongs to which source, so results on polyphonic audio won't be usable.
Unvoiced sounds - breaths, sibilance, plosive consonants like "t" and "k" - carry no clear pitch, so the tuner leaves them alone rather than forcing a pitch onto something that never had one. That's intentional: trying to tune noise usually produces artifacts, not music.
What to expect at high correction strength
Push strength toward 100% and the effect stops sounding like a polished vocal and starts sounding like a deliberately processed one - notes snap instantly rather than sliding, which is the sound behind plenty of vocal-forward tracks. That's an honest tradeoff, not a flaw: hard correction is a style choice, and it reads as artificial by design.
Formants - the resonances that give a voice its natural character - are not specifically preserved through large pitch corrections. A vocal pushed a long way from its natural pitch at high strength can start to sound thinner or less like the original singer, which is normal behavior for this kind of pitch correction rather than something to troubleshoot.
Vocal tuner vs. pitch shifter
These solve different problems even though both move pitch. A vocal tuner corrects individual notes toward a scale - it's about fixing or stylizing where notes land relative to a key. The pitch shifter instead transposes an entire recording by a fixed number of semitones, moving everything up or down together without reference to a scale.
Use the vocal tuner when specific notes in a vocal are off and you want them corrected or stylized. Use the pitch shifter when you want the whole performance - vocal, instrument, or full mix - moved to a different key uniformly.
Tips for better results
- Record as close to a single, clean vocal take as possible - background noise or a second voice on the same track will confuse pitch detection.
- Start at a moderate strength and adjust up or down by ear rather than jumping straight to 100%, unless the hard-tuned effect is what you're after.
- Set the key to match the song rather than guessing - wrong notes stand out clearly once correction is running against the wrong scale.
- Keep takes under 60 seconds per pass and process longer vocals in sections if you need to correct a full song.
- Expect some tonal change at high strength - that's the tradeoff for a hard, stylized tune, not a bug to fix.
- Run a noisy vocal through the noise remover first if hiss or hum is competing with the pitch detector.
Frequently asked questions
Is this vocal tuner free?
Yes. There's no sign-up, no limit on how many times you can process a vocal, and everything runs in your browser. There's nothing to buy and nothing to unlock.
Does my recording get uploaded anywhere?
No. Pitch detection and correction run entirely on your device. Your vocal is never sent to a server, which is worth knowing if you're working on something you'd rather keep private.
What is the autotune effect, exactly?
It's the sound of pitch correction pushed to a high strength setting, where notes snap instantly to the nearest pitch in the scale instead of sliding naturally. It's a generic pitch-correction effect available at any strength here, from a subtle polish to the hard, obviously processed sound.
Can this tune a full band mix or multiple singers at once?
No. Detection is built for monophonic audio - a single voice, one note at a time. A full mix with instruments or more than one singer on the same track will confuse the pitch tracker and won't produce usable results.
How long can my vocal clip be?
Up to 60 seconds per pass. For a full song, process it in sections - a verse and a chorus separately, for example - rather than trying to tune several minutes at once.
Will this change my voice's natural character?
At high correction strength, yes, to some degree. Formants aren't specifically preserved through a large pitch correction, so a vocal pushed hard and far from its natural pitch can sound thinner or less like the original take. That's expected behavior at strong settings, not a malfunction.
What happens to breaths and consonants?
Unvoiced sounds like breaths and hard consonants carry no clear pitch, so the tuner leaves them untouched rather than forcing a pitch onto them. Only the sustained, voiced parts of the vocal are corrected.
What scales are available?
Major, natural minor, chromatic, major pentatonic, minor pentatonic, and blues, with any root note from C to B. Chromatic corrects toward every semitone rather than a specific key, which is useful if you're not sure what key a vocal is in.
Does this work on mobile, including iPhone?
It runs in a mobile browser, though processing may be slower than on a desktop or laptop, especially on longer clips. For quick checks it works fine; for repeated fine-tuning, a larger screen and more processing headroom help.
What's the difference between the vocal tuner and the pitch shifter?
The vocal tuner corrects individual notes in a vocal toward a chosen key and scale. The pitch shifter transposes an entire recording by a fixed number of semitones instead, moving everything uniformly rather than correcting specific notes.
Can I add reverb to the tuned vocal?
Yes. A built-in vocal reverb control lets you add space to the corrected vocal directly in this tool. For more reverb control - decay, pre-delay, room size - route the result through add reverb afterward.
Why does my tuned vocal sound a little robotic even at a moderate setting?
Some artifacts are more noticeable on certain voices, vowels, or pitch jumps than others, even at moderate strength. Try lowering strength slightly, or double-check that the key and scale actually match the vocal - correcting against the wrong scale makes artifacts more obvious.
Does correction strength affect timing as well as pitch?
No. Strength only controls how firmly pitch snaps to the nearest scale note - it doesn't shift timing. If a vocal is dragging or rushing against a backing track, that's a separate editing problem this tool doesn't address; it corrects pitch only, not rhythm.
Guides for this tool
Change a song's key without changing tempo: the semitone math, fine-tuning with cents, and why extreme shifts change how a voice sounds.
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