Autotune online — professional pitch correction
Quick answer Correct pitch to a musical scale. Key, scale, retune speed, strength, and humanize — classic hard Autotune or natural correction.
Pitch correction — snaps vocals to a key & scale. Use Hard Autotune for the classic locked sound; Natural for subtle polish. Max 5 min. 15MB max (Pro: 20MB).
Keep at 0% for hard lock. Raise only if it sounds too robotic.
Its key and major/minor mood replace the Key and Scale above, so your vocal is tuned to that song.
Harmony needs a Major, Minor, Harmonic minor, Dorian or Mixolydian scale (max 3 min) and gives a stereo file.
Free to try · No signup required · Commercial use allowed · How we test · About VoxCraft
Autotune audio online for free with VoxCraft. Professional pitch correction detects the sung (or spoken) pitch, snaps it to your chosen key and scale, and lets you dial how hard and how fast the correction happens — from subtle natural tuning to the classic hard Autotune sound.
Unlike a simple pitch shifter (which moves everything by a fixed amount), this tool tracks pitch over time and corrects each note toward the nearest scale degree. Choose a key manually or leave it on Auto; pick major, minor, pentatonic, blues, or chromatic; then set strength, retune speed, and optional humanize.
Two optional extras: upload a reference song and the vocal is tuned to that song’s detected key and major/minor mood, or add a harmony (a third above or below, a fifth above, an octave below, or two voices at once) built from your own melody in the same scale. Harmony works with 7-note scales (major, minor, harmonic minor, dorian, mixolydian), is limited to 3 minutes and returns a stereo file.
Built for vocal takes, vocaloids, and melodic voiceovers. It is CPU-based (no GPU required) and limited to 5 minutes per file so processing stays responsive on shared hosting. For longer sessions, trim first with the Cutter tool.
How it works
- Upload a vocal or melodic clip (WAV, MP3, OGG, M4A — 15MB free / 20MB Pro).
- Pick a key (or Auto) and a scale — major, minor, pentatonic, blues, chromatic, and more.
- Set Strength (how hard notes snap), Retune speed (fast = robotic, slow = natural), and optional Humanize.
- Tap Autotune, preview, and download the corrected track.
Who uses this
Vocal takes
Fix small pitch drifts on a sung verse or chorus without re-recording.
Classic Autotune sound
Max strength + fast retune for the hard T-Pain / chart style effect.
Natural correction
Medium strength + slower retune to keep the performance human while tightening pitch.
Content creators
Polish a melodic voiceover or short-form vocal hook before publishing.
Tips for better results
- Clean, single-voice takes work best — denoise first if there is constant background noise.
- Fast retune + full strength = hard Autotune. Slow retune + 50–70% strength = more natural.
- Humanize adds tiny random variation so long held notes don’t sound locked to a machine.
- Auto key works well on clear tonal material; for ambiguous or chromatic lines, pick the key by ear.
- Chromatic scale only corrects to the nearest 12-TET note — useful when you don’t want a diatonic constraint.
Frequently asked questions
Is this the same as Auto-Tune by Antares?
It is pitch correction in the same category — track pitch, snap to a scale, control speed and strength. It is not the Antares product and does not use their algorithms or branding.
Does it work on speech?
It can, but speech is less tonal. Results are strongest on sung or hummed melodies with clear pitch.
Why is there a 5-minute limit?
Pitch tracking is CPU-heavy. The limit keeps processing reliable on the free tier. Trim longer files first.
How does the reference match work?
The reference is analysed for its overall key and whether it sounds major or minor, and your vocal is tuned to those notes. It matches the key, not the melody, and key detection on a busy mix is an estimate, so check the result by ear.
How good are the harmonies?
They are your own voice shifted to scale notes, so they follow your melody and stay in key. They sound best on clean, dry vocals and are a quick sketch rather than a replacement for a recorded harmony.
Can I choose any key?
Yes — C through B including sharps/flats, or Auto to detect from the audio.
What does Humanize do?
It adds a small random offset to target pitches so the correction does not sound perfectly quantized.