Audio to SRT
Generate timestamped subtitle drafts from audio recordings.
What this tool is for
Turn audio-only recordings into timed transcript text for subtitles, captions, and publishing workflows.
Podcasters, course creators, editors, accessibility teams, and content marketers.
Supported formats
- MP3
- WAV
- M4A
- FLAC
- OGG
- WebM
Common use cases
- Podcast captions
- Audio courses
- Narration subtitles
- Accessibility drafts
Example workflows
Create SRT from a podcast segment
Upload an MP3 clip, generate a timestamped transcript, then edit the text into subtitle lines.
Caption narrated slides
Transcribe the audio track first, then use the timed draft while building the final video captions.
Prepare accessibility text
Use the transcript as a starting point for captions, show notes, and searchable archives.
Tips for Better Results
- Use short audio clips for easier timing review.
- Clean filler words only after checking that meaning is preserved.
- Export a high-quality audio file if the original recording is noisy.
- Preview captions with the final video before publishing.
Why use SuperTextHub?
Files are processed in your browser and are not uploaded to SuperTextHub. The tool is free, does not require an account, and supports transcript copy or download workflows.
Troubleshooting
The timing needs adjustment
AI timestamps are a draft. Review timing in a subtitle editor before publishing.
The audio has multiple speakers
Add speaker context manually when it matters for understanding.
The transcript has long blocks
Split long transcript chunks into shorter subtitle lines for readability.
Frequently Asked Questions
Can an audio file become an SRT subtitle file?
Yes. First generate a timestamped transcript, then format and review it as SRT captions.
Do I need a video file?
No. You can start from audio when you are preparing captions for a video that uses the same audio.
Is audio-to-SRT free?
Yes. SuperTextHub is free to use and does not require an account.