Convert Audio to SRT
Turn any audio file into timestamped SRT subtitles. Perfect for adding captions to video.
Transcribe Files
MP3, WAV, MP4, M4A, FLAC, OGG, AAC, WebM, and MOV
2 free transcripts daily. No credit card required.
Unlimited Pricing
"...saves me a lot of time when going through meeting notes."
Convert Audio to SRT with FastTranscriber
Convert audio files to SRT subtitle format. Generate timestamped subtitles from MP3, WAV, or any audio. Here is a quick guide to completing the process with FastTranscriber:
Step 1: Start for Free
Open FastTranscriber and begin with the free daily allowance. No account or credit card is required.
Step 2: Upload Your Audio
Open "Transcribe Files" and select your audio or recording. MP3, WAV, M4A, FLAC, OGG, AAC, and WebM are supported directly.
Step 3: Generate the Captions
Click "Transcribe" to convert the spoken audio into caption text with accurate, speech-synced timestamps.
Review the text and timing, then download an SRT subtitle file for your video editor or publishing platform.
Create subtitles from a separate audio track
Audio to SRT is useful for narration, recorded talks, and audio episodes that will accompany a video. FastTranscriber turns the speech into timed subtitle cues; you then review and place those cues in the player or editing project that uses the audio.
Keep the audio and video timeline together
Start with the final narration or conversation file. If the audio begins several seconds into your video, its subtitle times will need the same offset in your editor. When audio is split into clips or rearranged, a subtitle file made from the original continuous recording will need corresponding timing adjustments.
Know when transcription is needed
Use this workflow when you have speech in an audio file and need to create subtitle text. If you already have reviewed captions in VTT format, converting that file to SRT avoids generating a fresh transcript. Changing a subtitle format preserves existing wording; transcribing audio creates a new draft to check.
A script without timings is different again. The exported SRT follows the recorded speech, which may include pauses, changed wording, or a different order from the script used during recording.
Make the cues readable in context
Check names, abbreviations, and technical terms, then play the subtitles with the finished media. Adjust long lines and cue boundaries in your caption editor where needed. For an audio episode published over a still image, review the whole timeline just as you would a filmed video: the words still need enough time on screen to be read.
Frequently Asked Questions
Why would I convert audio to SRT?
If you have separate audio (like a podcast) and want to create subtitle files for a video version.
What audio formats work?
MP3, WAV, M4A, FLAC, OGG, AAC, WebM — all supported.
Can I use these SRT files in Premiere Pro?
Yes. SRT is supported by Premiere Pro, Final Cut, DaVinci Resolve, and all major editors.
Other input and output formats
Use a more specific source workflow or choose web captions or a reading copy.
- MP3 to SRTCreate timed subtitle cues from the speech in an MP3 recording.
- MP4 to SRTGenerate a separate SRT subtitle file from your video soundtrack.
- MP3 to VTTCreate WebVTT captions from MP3 speech for a compatible web player.
- Audio to WordDownload the transcript as an editable DOCX document for review and formatting.
Work with existing subtitle files
Once your captions are reviewed, convert their format for another destination.
Related guides
Learn how to use timed text for a video or an audio episode.