How to autotune your voice free, right in your browser.
You do not need a DAW, a plugin, or a subscription to pitch-correct a vocal. With SoundForge Auto-Tune you can snap your singing to key — gentle polish or the full robotic glide — completely free, in your browser, with nothing ever uploaded.
🎤 Open the Auto-Tune →What "autotune" actually does
Autotune is pitch correction. The tool listens to your vocal in tiny slices, works out the note you sang in each slice, then nudges it toward the nearest correct note in a musical scale. Used lightly it tidies up the small flat-and-sharp wobbles every singer has. Pushed hard it produces the instant, locked-to-the-grid "robot" sound made famous by Cher and T-Pain. Both come from the same control — the only difference is how hard the correction grabs.
The SoundForge Auto-Tune works on a dry solo voice. It splits your vocal into roughly 90-millisecond segments, detects the pitch of each one, snaps that pitch to the key and scale you chose, shifts the segment, and stitches everything back together with short crossfades. Because it is built for vocals, it works best when there is no music or heavy reverb behind the voice.
How to autotune your voice free, step by step
- Open the tool. Head to the Auto-Tune page. Everything loads instantly and runs on your device — there is no sign-up.
- Record or upload a vocal (Step 1). Click Record from microphone to sing straight into the tool, then click Stop recording when you are done. Or drop a vocal file onto the dropzone — MP3, WAV, OGG, M4A and more all work. A dry solo voice with no backing music gives the cleanest result.
- Set the key and scale (Step 2). Pick the root note from the Key menu, then choose a scale: Major, Minor, or Chromatic. Match these to the song you are singing over so the corrected notes land in the right places.
- Choose the retune strength. Drag the Retune strength slider. Lower values (40–70%) give natural-sounding correction that keeps your phrasing; 100% is a hard snap for the robotic effect.
- Tune it (Step 3). Click Tune it. The tool analyses the pitch, corrects each segment, and tells you how many segments it snapped.
- Preview. Hit play on the Tuned player and compare it against the Original. Not happy? Change the key, scale, or strength and tune again — it is instant and free to re-run as many times as you like.
- Download. Use the download buttons to save your tuned take. The file is generated on your machine and saved straight to your downloads folder.
Getting a natural result vs the robot effect
The single most useful habit is to record dry. Turn off any reverb or effects on your mic, sing into a quiet room, and keep music out of the recording. Pitch detection works on what it can hear, and a clean signal is far easier to track than a voice buried in a beat.
For transparent correction, set the strength somewhere in the 40–70% range. That pulls obvious wrong notes toward the scale while leaving your slides and vibrato mostly intact, so it sounds like a tidier version of you rather than a machine. For the unmistakable autotune effect, push the slider to 100% — every note jumps instantly to the nearest scale tone with no glide, which is exactly what creates that hard, glassy sound. If you are unsure which key fits, choose the Chromatic scale: it snaps to the closest semitone regardless of key, which is the safest catch-all for spoken-word lines or melodies you do not have charted.
Why do it in your browser?
Your voice is personal, and a rough vocal take is something most people would rather not hand to a random website. SoundForge keeps it private. All the processing happens on your own device through the Web Audio API — your recording or file is never uploaded, nothing is sent to a server, and there is no account to create. It is genuinely free with no watermark and no export limit, and when you close the tab the audio is gone. That also means it is fast: there is no upload wait and no download queue, just record, tune, and save.