Audio Trimmer
Cut audio files online, set start and end points, and export a clean clip.
Try it freeFree Audio Tool
Free audio speed changer online
Change audio speed online without uploading your file to a server. Use the browser-based speed slider to slow audio down, speed audio up, preview the result, and download a rendered WAV copy.
Free Audio Tools
Professional audio tools right in your browser
Trim, convert, merge, record, estimate, and prepare audio for transcription. No downloads and no signup required for the tools.
Audio Converter
Convert browser-supported audio into a downloadable WAV file.
Try it freeAudio Merger
Combine multiple audio files into one browser-generated WAV file.
Try it freeMP3 Compressor
Reduce speech audio size with a browser-side, voice-optimized export.
Try it freeAudio Speed Changer
Change audio speed online for free, slow audio down or speed it up, and export a rendered WAV copy.
Try it freeVoice Recorder
Record audio directly from your microphone in the browser.
Try it freeTab Audio Recorder
Capture audio from another Chrome or Edge tab for videos, webinars, and browser playback.
Try it freeTab + Microphone Recorder
Record a Chrome or Edge tab and microphone together for Meet, Zoom Web, Teams, or browser calls without an extension.
Try it freeMeeting Notes Generator
Create a structured meeting agenda and notes template.
Try it freeWord Counter
Count words and characters and estimate speaking time.
Try it freeReading Time Calculator
Paste text and estimate read-aloud duration.
Try it freeAudio Length Estimator
Estimate how long a script will be when spoken.
Try it freeAudio Cleaner / Noise Reducer
Prepare speech audio for transcription with a browser-side voice-focused cleanup export.
Try it freeSilence Remover
Remove low-volume silence from speech recordings and export a shorter WAV file.
Try it freeVolume Normalizer
Normalize speech audio volume in your browser and export a louder, cleaner WAV copy.
Try it freeSplit Audio by Silence
Find quiet gaps in audio and create suggested split points for long recordings.
Try it freeSRT/VTT Cleaner
Clean subtitle text, normalize whitespace, and prepare SRT or VTT files for review.
Try it freeSubtitle Time Shifter
Shift SRT or VTT subtitle timestamps forward or backward.
Try it freeTranscript Word/Quote Extractor
Extract likely quotes, keywords, and useful lines from transcript text.
Try it freeFree browser tool
Runs locally in browserAudio Speed Changer
Choose an audio file to see the resulting length before rendering.
AI Transcription
Interested in fast, accurate AI-based transcription?
Start free, upload your audio, and get a searchable transcript with speaker labels, timestamps, and export options.
Change audio speed online for free
Upload an audio file, choose a playback speed from 0.5x to 2x, and render the changed-speed version in your browser. The tool is free to use and does not require a signup for the speed change.
Slow down audio or speed it up
Use slower speeds for interviews, lectures, podcasts, language practice, and hard-to-hear sections. Use faster speeds to review recordings quickly before creating a transcript.
Trim first, then change speed
If you only need part of a recording, cut the clip with the Audio Trimmer first and then use this Audio Speed Changer to render the trimmed audio at a new speed.
How it works
How to use the Audio Speed Changer
- Choose an audio file supported by your browser.
- Move the speed slider to slow the audio down or speed it up.
- Click Change speed to render the result locally.
- Preview the changed-speed audio and download the WAV file.
FAQ
Audio Speed Changer questions
Can I change audio speed online for free?
Yes. The Audio Speed Changer runs in your browser, so you can choose a speed, render the result, and download the changed-speed WAV file for free.
Can I slow down audio online?
Yes. Set the slider below 1.0x to slow audio down. This is useful for reviewing interviews, lectures, podcasts, and sections that are difficult to hear at normal speed.
Can I speed up audio online?
Yes. Set the slider above 1.0x to speed audio up and create a shorter rendered copy for faster review or listening.
Is this an audio tempo changer?
It changes playback speed and duration, which changes tempo. It does not currently preserve pitch separately from speed.
Can I trim audio before changing speed?
Yes. Use the free Audio Trimmer to cut the section you need, download the trimmed clip, and then use this page to change the speed of that audio.