Audio Trimmer
Cut audio files online, set start and end points, and export a clean clip.
Try it freeFree Audio Tool
Voice speed changer online
Change the speed of voice recordings in your browser. Slow down interviews, lectures, podcasts, and voice notes for careful listening, or speed up speech for faster review before 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.
Voice speed changer for speech audio
Use this page when the recording is mostly spoken voice: interviews, lectures, voice notes, podcasts, webinars, or meeting clips. Choose a slower speed for difficult sections or a faster speed for quick review.
Slow down or speed up voice recordings
Set the slider below 1.0x to slow down speech, or above 1.0x to speed up a long recording. The changed-speed copy is rendered in your browser.
Transcribe after changing voice speed
When you need searchable text, upload the original or edited recording to InstantTranscriber for AI transcription with speaker labels, timestamps, and export formats.
How it works
How to use the Voice Speed Changer
- Choose a browser-supported voice recording.
- Set the speed below or above 1.0x.
- Render and preview the changed-speed voice audio.
- Download the WAV file or continue to transcription.
FAQ
Voice Speed Changer questions
Can I change voice speed online for free?
Yes. Choose a browser-supported voice recording, set the playback speed, render the result locally, and download the changed-speed WAV file.
Can I slow down a voice recording?
Yes. Set the speed below 1.0x to slow down speech for careful listening, note-taking, or language practice.
Can I speed up a voice recording?
Yes. Set the speed above 1.0x to make long voice notes, lectures, or interviews faster to review.