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This free online audio pitch shifter runs in your browser. No upload and no signup: add MP3, WAV, M4A, OGG, FLAC, or AAC files, set pitch in semitones (and fine-tune in cents), preserve tempo or use speed-only mode, apply optional high-pass/low-pass and output gain, and download in your chosen format.
Why Use a Pitch Shifter?
A pitch shifter changes how high or low audio sounds. Use it to sing or play in a different key without changing the tempo, to change only playback speed (speed-only mode), to create vocal or instrument effects, or to match the pitch of one recording to another. This tool gives you waveform preview, quick presets, advanced filters, batch processing, and full output options—all in the browser.
Uses for pitch shifting
- Music & vocals: Change key, harmonize, or create effects (e.g. +12 for an octave up)
- Content & video: Match voice or music to a different pitch; fix off-key recordings
- Creative: With tempo not preserved, get chipmunk (faster + higher) or deep (slower + lower) effects
How the Pitch Shifter Works
You set the pitch shift in semitones (−12 to +12) and can fine-tune in cents (±50). Quick presets set +1 oct, −1 oct, ±5 semitones, or original. When Preserve tempo is on, the tool uses time-stretching so duration stays the same and only the pitch changes. When Speed only is on, only playback speed (0.5x–2x) changes and pitch stays the same. You can also combine pitch with a speed multiplier. Advanced options apply high-pass, low-pass, and output gain before encoding. Processing runs in your browser with your chosen output format, bitrate, and sample rate.
What this tool offers
- Waveform view for original and pitched audio
- Play from cursor and native audio controls
- Pitch shift −12 to +12 semitones; fine tune ±50 cents; presets (+1 oct, −1 oct, ±5 st, Original)
- Preserve tempo or change tempo with pitch; Speed-only mode (no pitch change); Speed slider 0.5x–2x
- Advanced: high-pass (20–120 Hz), low-pass (4–20 kHz), output gain (−6 to +6 dB)
- Output format: same as input, MP3, WAV, FLAC, OGG, AAC, M4A; bitrate and sample rate
- Preserve metadata; duration and estimated size per file; batch process and download all as ZIP
Tips and best practices
- Presets: Use +1 oct, −1 oct, or ±5 st for quick shifts; then fine-tune with the cents slider if needed.
- Preserve tempo: Keep it on for most music and voice so the length stays the same and only pitch changes.
- Speed only: For slowing down or speeding up without changing key (e.g. speech or learning), enable Speed only and set the Speed slider.
- Moderate shifts: ±3 semitones usually sound clean; extreme ±12 can show more artifacts.
- Advanced: Use high-pass (e.g. 80 Hz) to remove rumble; a small negative output gain (e.g. −2 dB) to avoid clipping.
- Same format: Use “Same as input” to avoid re-encoding when you don’t need a different format.
- Metadata: Turn on “Preserve metadata” to keep track title, artist, and artwork in the pitched file.
Powered by Web Audio API and optimized processing.
Frequently Asked Questions
What is a pitch shifter?
A pitch shifter changes the pitch (how high or low audio sounds) without necessarily changing the playback speed. This tool lets you shift by semitones: +12 is one octave up, −12 is one octave down. You can preserve the original tempo so only the pitch changes.
Is the pitch shifter free?
Yes. The audio pitch shifter is free to use. No signup or upload is required; processing runs in your browser. You can process multiple files and download results in your chosen format (MP3, WAV, FLAC, and others).
What are cents?
Cents are a fine pitch adjustment: 100 cents = 1 semitone. Use the cents slider (±50) for small corrections (e.g. +20 cents for a slight raise) without moving a full semitone.
What does preserve tempo do?
When Preserve tempo is on, the duration of the audio stays the same and only the pitch changes (e.g. for singing in a different key). When it is off, pitch and speed change together—higher pitch plays faster, lower pitch plays slower (chipmunk or deep voice effect).
What is Speed only mode?
Speed only changes playback speed (0.5x to 2x) without changing pitch. Use it for slowing down or speeding up speech or music while keeping the same key. When Speed only is off, you can still set a Speed slider to combine with pitch shift.
What are the advanced options?
Advanced options include high-pass (cut frequencies below 20–120 Hz to remove rumble), low-pass (cut above 4–20 kHz to reduce hiss), and output gain (−6 to +6 dB) to avoid clipping or boost level after processing.
What audio formats does the pitch shifter support?
Input formats include MP3, WAV, M4A, OGG, FLAC, and AAC. You can keep the same format as the input or convert the output to MP3, WAV, FLAC, OGG, AAC, or M4A, with optional bitrate and sample rate (44.1, 48, or 96 kHz).
Is my audio secure?
Yes. All processing happens entirely in your browser. Your audio files are never uploaded to any server. No data is stored or transmitted, so your files stay private.
Can I shift pitch on multiple files?
Yes. Add multiple audio files, then use Shift pitch all to process them in one go. You can download each pitched file individually or use Download all to get a single ZIP containing every pitched file.
Does pitch shifting affect quality?
Moderate shifts (e.g. ±3 semitones) with tempo preserved usually sound clean. Extreme shifts can introduce some artifacts. Quality also depends on your output format and bitrate; use a higher bitrate or lossless (WAV/FLAC) for best results.