Generate SRT Subtitles Online

Audio to SRT Converter FREE

Turn spoken audio into synchronized SubRip (.srt) subtitle files with millisecond-accurate timestamps for video editors.

✓ No Account Required ✓ No API Key Needed ✓ OpenAI Whisper AI ✓ 100% Free

Audio • 48 kHz Stereo

Interview_Session_Q3.mp3

⚡ Whisper AI. 99.2% Accurate.

SRT Subtitles

“Welcome everyone to today’s session…”

Clean TXT

00:01:24 [Speaker 1] Key discussion points

VTT Captions

Synced timestamps

Drop your file here

Fast speech recognition powered by Whisper

or drag and drop your file here

MP3 WAV M4A MP4 WebM FLAC Opus

Recommended file size up to 500 MB for fast browser decoding • 30 min limit on mobile

0 MB • Calculating duration...

00:00

Ready to record microphone audio

Model Profile Whisper • Cloud AI

▾

Language 13 languages supported

▾

Transcription Engine Cloud AI

☁️ Whisper AI Cloud

Transcribing Speech with AI

Transcribing audio using Whisper. Please wait a moment...

Initializing neural engine... 0%

Audio Length —

Elapsed —

Remaining Calculating...

Speed —

Streaming Transcript Preview

Awaiting initial speech segment...

No Speech Detected

The audio contains only silence, background noise, or unsupported frequencies.

Direct Answer

How do I convert audio to an SRT subtitle file?

An SRT (SubRip) file contains numbered subtitle blocks with precise start and end timestamps (00:00:00,000 --> 00:00:00,000) followed by spoken dialogue. The Tool Room calculates segment timing with Whisper AI and exports ready-to-use .srt files for video editors.

Private & Secure

Confidential Transcription

The Tool Room processes speech with state-of-the-art Whisper AI without storing your media or logging personal data.

Step 1 Select audio or video

Step 2 Audio decoded in browser

Step 3 Whisper AI generates transcript

Step 4 Export text with zero retention

3 Simple Steps

How It Works

Turn audio and video into accurate text in seconds — completely online with zero setup.

Step 01

Choose a file

Drop in any audio or video file, or record live speech directly from your microphone with one click.

MP3 WAV MP4 M4A 🎙️ Mic

Step 02 • AI

Transcribe with AI

Whisper accurately transcribes speech with automatic punctuation and language detection.

Whisper • 13+ Languages

Step 03

Export your text

Copy with one click or download as TXT, SRT subtitles, VTT, Markdown, or save directly to Google Drive.

TXT SRT VTT Markdown ☁️ Drive

Key Capabilities

Built for Accuracy & Speed

Focused speech-to-text features powered by advanced neural models.

Whisper AI Model

No Account Required

Start transcribing immediately without creating an account or entering credentials.

Multiple Formats

Support common audio and video formats including MP3, WAV, M4A, MP4, WebM, and FLAC.

Timestamped Transcripts

Create SRT/VTT files when timestamps are available for subtitles and captions.

Searchable Transcript

Find words and phrases instantly. Edit text inline directly in the browser.

Instant Export

Download your transcript directly as TXT, SRT, VTT, Markdown, or JSON.

Real-World Audio

Built for real-world audio

Designed for interviews, lectures, meetings, podcasts, and personal notes.

Meetings →

Private transcriptions for confidential team discussions and executive reviews.

Lectures →

Convert academic courses and talks into searchable, organized study notes.

Interviews →

Fast, timestamped text for journalistic and qualitative research interviews.

Podcasts →

Generate episode transcripts, show notes, and accurate episode quotes.

Voice Notes →

Turn quick voice memos and personal dictation into clean, editable text.

Research & Notes →

Analyze field recordings and sessions without third-party data leaks.

Videos →

Extract dialogue and create SRT/VTT subtitle files for video editing.

Personal Recordings →

Transcribe personal audio files directly on your computer or phone.

Compatible Containers

Supported Formats

The Tool Room processes common audio and video formats directly in modern browsers.

Audio Formats

MP3 WAV M4A FLAC AAC OGG OPUS

Video Formats

MP4 WebM

Deep Dive

SubRip (.SRT) Syntax & Timing Structure

Understanding subtitle numbering, timecodes, and video editor compatibility.

The SubRip format is the global standard for timed video captions. Each entry consists of:

A sequential subtitle index number (e.g., 1, 2)
Millisecond start and end timecodes separated by a right-arrow: 00:01:14,250 --> 00:01:17,800
One or two lines of caption text
A blank delimiter line

The Tool Room formats timestamps strictly to the SRT standard with comma-separated milliseconds, ensuring seamless imports into Adobe Premiere Pro, Final Cut Pro, DaVinci Resolve, and VLC media player.

Clear Answers

Frequently Asked Questions

Direct answers about AI audio transcription, supported formats, and privacy.

Can I upload this SRT directly to YouTube? ▼

Yes. YouTube accepts The Tool Room .SRT subtitle files directly in YouTube Studio under the Subtitles tab.

What is the difference between SRT and VTT? ▼

SRT uses commas for milliseconds (00:00:00,000), while WebVTT uses periods (00:00:00.000) and begins with a "WEBVTT" header for web browsers.