How to change tempo without changing pitch

  1. Drop your track into the upload box — the original loads with a preview player.
  2. Pick a preset (75% Practice, 100%, 125%, 150%) or set any speed from 50% to 200% on the slider; the estimated output length updates as you move it.
  3. Press Change tempo and give the time stretch a few seconds to run.
  4. Preview the result — same key, new speed — and download MP3 or WAV.

A tempo changer is different from a simple speed control: instead of playing the file faster or slower (which drags the pitch along with it), it stretches time while leaving frequency alone. Chords stay in the same key, vocals keep their character, and only the pacing changes. That makes it the right tool for musicians slowing difficult passages, dancers rehearsing choreography at reduced speed, and anyone speeding through lectures and podcasts without chipmunk voices.

Processing happens entirely in your browser — no upload, no account, no length limits beyond your device's patience. If you want pitch and speed to move together for the classic nightcore or slowed aesthetic, use the Nightcore or Slowed + Reverb tools instead; to move the key without touching speed, that is the Pitch Shifter.

FAQ

How can I change a song's speed without changing the pitch?
Use time stretching instead of simple playback-rate change. This tool analyzes the waveform and rebuilds it at the new tempo while keeping every note at its original pitch — drop a file, set the speed between 50% and 200%, press Change tempo and download the result.
What speed is best for practicing an instrument along to a track?
Most players start at 75% — slow enough to read fast passages, fast enough to keep the feel — which is why it is a one-click preset here. Drop further to 50–60% for transcribing solos, then raise the tempo in steps as the part becomes comfortable.
Why does the tempo change take a few seconds to process?
Pitch-preserving stretching is real signal processing, not just faster playback, and it runs on your own device rather than a server. Expect a few seconds for a full song; the page shows the estimated output length before you commit.
Is the tempo changer free, and does my file stay private?
Yes — free, no signup, no watermark, and the audio never leaves your device. When it sounds right you download the stretched version as a 320 kbps MP3 or WAV.

Related tools

🎹 Pitch Shifter 🚀 Sped Up Audio 🌊 Slowed + Reverb 🔍 BPM Detector 🎚️ Stem Splitter 🔗 Audio Joiner