Pitch & Time

Audio Speed Changer Online

Speed up or slow down songs, podcasts, and recordings from 0.5× to 2.0× with smooth time-stretching. 100% in-browser processing.

100% browser-based. Zero file uploads.

Drop audio file here or browse

Supports MP3, WAV, M4A, OGG, FLAC, AAC · 100% In-Browser

FAQ

Frequently Asked Questions

Can I change audio speed without altering the musical pitch?

Yes. Our time-stretching engine preserves original pitch so voices and instruments sound natural at faster or slower playback speeds.

What is the speed range?

You can adjust speed anywhere from 0.5× (half speed / slow motion) up to 2.0× (double speed).

Is my audio kept private?

Yes, 100%. All resampling and time-stretching runs client-side inside your browser. No files are uploaded to any server.

Does slowing down audio reduce fidelity?

No. Offline high-resolution audio rendering recalculates sample points smoothly, ensuring no clipping or buzzing.