How to transpose audio by semitones — free, browser-based
- Step 1Upload your audio file — Drop your audio.
- Step 2Set pitch shift amount in semitones — Enter the number of semitones to shift.
- Step 3Download the pitch-shifted audio — Download the transposed audio.
Frequently asked questions
How many semitones can I shift without quality loss?+
Modest shifts (±2–3 semitones) are largely transparent on voice and instruments. Large shifts (±6–12 semitones) introduce artefacts — robotic quality, formant distortion, or unnatural texture — especially on complex musical content. For voice pitch shifting, keep shifts under ±4 semitones for natural-sounding results.
What is the difference between pitch shifting and transposing?+
Pitch shifting and transposing are the same operation applied to audio — both change the musical key while keeping duration constant. 'Transposing' typically refers to changing the key of a musical piece (e.g. from C major to D major = 2 semitones up). 'Pitch shifting' is the same concept applied to audio signal processing.
Does pitch shifting also change the speed of my audio?+
No — the pitch shifter uses time-domain phase-vocoder or rubber-band algorithms specifically to change pitch without affecting duration. If you want to change speed as well as pitch, use the tempo changer tool with both speed and pitch linked.
Privacy first
All audio processing runs locally in your browser using FFmpeg compiled to WebAssembly. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.