# Audio Pitch and Speed Changer Speed up, slow down, or shift the pitch of an audio file in your browser ### Input Audio Audio file MP3 / WAV / M4A / OGG Speed (1 = normal) _1_ Pitch (semitones) _0_ Convert Clear Processed in your browser. Max ~100 MB; the first conversion may take longer to prepare. ### Processed Audio Your processed audio will appear here after conversion ## Change audio speed and pitch online Use this audio speed changer to slow down a lesson, speed up a spoken recording, or shift a track higher or lower before you download a new copy. Speed and pitch are separate controls, so you can change either one or combine them for a draft export. A useful starting point is 0.85× for dense speech, 1.25× for a podcast you already know, or one or two semitones for a practice track. Preview the result before sharing it: strong changes can make voices, cymbals, and room ambience sound artificial. The selected file is processed in this browser tab rather than sent to an audio-processing server. Keep the original recording so you can return to it and try a different setting later. ## How to change audio pitch or speed Start with one adjustment, listen to the export, then make a second pass only if you need it. 1. **Upload** Choose an audio file up to about 100 MB. 2. **Set speed and pitch** Speed is a multiplier; pitch is semitones. Leave either at default to skip. 3. **Convert** The tool creates a new audio file in this browser tab using the settings you selected. 4. **Preview** Listen for artifacts, then keep the download. 5. **Clear** Reset to try different settings. ## Example: slow down a language lesson ### Before A learner has a short dialogue that moves too quickly to repeat comfortably. ### After They choose 0.85× speed and leave pitch at its default, then download a slower practice copy while keeping the original recording unchanged. For a clean excerpt first, use the Audio Trimmer; for a more even listening level afterwards, use Audio Volume Normalizer. ## Useful audio speed and pitch workflows ### 1. Language practice Slow a short dialogue enough to hear each phrase before repeating it. ### 2. Podcast listening Make a personal faster listening copy while keeping voices close to their usual sound. ### 3. Music rehearsal Lower a practice track by a few semitones or slow down a difficult passage. ### 4. Voice-over drafts Try an alternate pace before recording a final take. ### 5. Accessibility copies Prepare a calmer-speed version of a short spoken instruction. ### 6. Sound-design sketches Explore a higher or lower overall tone before moving to a full audio editor. ## Speed change versus pitch change Choose the control that matches the result you need; changing both produces a different creative effect. | Goal | Change speed | Change pitch | | --- | --- | --- | | Play speech faster | Yes | Leave at default | | Make a song lower | Leave at default | Yes | | Slow practice audio | Yes | Usually leave at default | For precise music production, multi-track editing, or repair work, keep a master and use a dedicated audio workstation. ## Before you export - Extreme speed or pitch changes can sound unnatural. - Long files and high-quality audio take more memory and time. - The tool changes the complete selected file, not a single passage. - Keep the original recording if you may need another version. ## File handling The selected recording is processed in this browser tab and is not uploaded to an audio-processing server. The first conversion may take longer while the page prepares media components. Keep the tab open until the download is ready. Downloads save to your normal downloads location; remove copies from shared devices when necessary. ## Frequently Asked Questions ### How does speed change work? Speed changes how quickly the recording plays. The speed control is designed to keep voices and music close to their original pitch, although extreme settings can sound less natural. ### How does pitch change work? Pitch changes how high or low the whole recording sounds in semitones. Leave speed at 1× when you want to change pitch while keeping the duration close to the original. ### Can I change both at once? Yes. Pitch is applied first, then speed. Preview carefully because combined settings can sound unnatural. ### Is this like Autotune? No. It shifts the whole signal; it does not correct notes to a scale. ### Uploaded? No. Your selected file is processed in this browser tab and is not sent to an audio-processing server. ### Quality loss? Resampling and tempo filters are not transparent at extreme settings. Stay near 0.8–1.25× and ± a few semitones for cleaner results. ### File limit? About 100 MB. ### Output? The tool downloads an audio file after processing. Check the filename and preview before replacing an important original. ### Podcasts at 1.5×? Yes-raise speed and leave pitch at 0 for chipmunk-free faster playback exports. ### First run slow? The first conversion can take longer while the page prepares its media-processing components. Later conversions in the same browser are usually quicker. ## Continue the audio workflow - [Audio Trimmer](https://www.toolcomb.com/audio-trimmer) - Keep only the section you need. - [Audio Volume Normalizer](https://www.toolcomb.com/audio-volume-normalizer) - Make listening levels more consistent. - [Audio Converter](https://www.toolcomb.com/audio-converter) - Create a different audio format. - [Audio Waveform Visualizer](https://www.toolcomb.com/audio-waveform-visualizer) - Create a simple waveform image. ## Related Tools Discover more free tools that might help with your next task. [Add Music to Photo Still photo + soundtrack → MP4 video Use Tool](https://www.toolcomb.com/music-to-photo) [Remove Audio from Video Mute a video / strip the soundtrack Use Tool](https://www.toolcomb.com/remove-audio-from-video) [Add Music to Video Replace a video soundtrack with your music Use Tool](https://www.toolcomb.com/add-music-to-video) [Audio Trimmer Cut MP3/WAV clips by start and end time in the browser Use Tool](https://www.toolcomb.com/audio-trimmer) [Audio Joiner Merge multiple audio files into one track Use Tool](https://www.toolcomb.com/audio-joiner) [Audio Converter Convert between MP3, WAV, OGG, and M4A locally Use Tool](https://www.toolcomb.com/audio-converter) [View All Tools](https://www.toolcomb.com/tools)