Audio Trimmer
Cut audio files online, set start and end points, and export a clean clip.
Try it freeFree Audio Tool
Change audio speed online
Use a free browser-based audio speed changer to slow audio online, speed up audio online, or adjust voice recordings before review and transcription.
Free Audio Tools
Professional audio tools right in your browser
Trim, convert, merge, record, extract, 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 freeExtract Audio From Video
Extract audio from browser-supported video files into a downloadable audio recording.
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, use a voice speed changer, slow audio online, or speed up audio online and export a 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 Recorder
Record meetings locally with tab and microphone audio. No bot or cloud recording; download one private audio file.
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 freeSRT/VTT Converter
Convert subtitle text between SRT, WebVTT, and plain transcript formats.
Try it freeSubtitle Drift Fixer
Fix subtitles that gradually drift out of sync by stretching or compressing timestamps.
Try it freeSubtitle Line Breaker
Reflow SRT or VTT caption text into cleaner lines with configurable length limits.
Try it freeTranscript Cleaner
Clean transcript text by removing timestamps, fillers, repeated spaces, and noisy formatting.
Try it freeTranscript to Show Notes
Generate show notes, chapters, quotes, and keywords from pasted transcript text.
Try it freeAudio Quality Checker
Check audio duration, volume, clipping, silence, channels, and transcription readiness.
Try it freeStereo Channel Splitter
Export the left or right channel from a stereo recording as a separate WAV file.
Try it freeSRT/VTT to Plain Text
Remove subtitle timestamps and numbering to extract readable transcript text.
Try it freeTranscript Timestamp Finder
Search timestamped transcripts and pull matching lines with nearby context.
Try it freeCaption FPS Converter
Convert subtitle timing between common video frame rates such as 23.976, 24, 25, 29.97, and 30 fps.
Try it freeFree browser tool
Runs locally in browserAudio Speed Changer
Choose an audio file to see the resulting length before rendering.
Next step
Transcribe the edited audio when you need text
Start free, upload the prepared recording, and get an AI transcript with searchable text, speaker labels, timestamps, summaries, and TXT, DOCX, PDF, SRT, or VTT exports.
Change audio speed online without installing software
Choose an audio file, set the new speed, and render the result in your browser. The speed-change step does not require a signup.
Slow audio online or make it faster
Use slower playback for dense speech and difficult sections. Use faster playback for long recordings, voice notes, lectures, and podcasts you want to review quickly.
Keep the original for transcription quality
For best AI transcription quality, keep the cleanest original recording. Use the changed-speed copy for listening and review, then upload the file that best matches your workflow.
How it works
How to use the Change Audio Speed Online
- Choose an audio file supported by your browser.
- Select the new speed.
- Render and preview the changed-speed audio.
- Download the WAV copy or continue to transcription.
FAQ
Change Audio Speed Online questions
How do I change audio speed online?
Upload a browser-supported audio file, move the speed slider, render the changed-speed version, and download the WAV result.
Can I slow audio online?
Yes. Set the speed below 1.0x to slow audio online for detailed listening.
Can I speed up audio online?
Yes. Set the speed above 1.0x to create a faster review copy.