Convert MP3 Audio to SRT Subtitles

Upload your audio and let Profi PDF generate perfectly timed subtitles in seconds. Great for podcasts, accessibility, and social media videos.

Auto-Sync Timestamps

Speaker Detection

Export SRT & VTT

1.5M users

14,382 reviews

Drop your files here

Size up to 250 MB

How It Works

Three steps. No installs. Done in minutes.

Upload MP3. Drag your MP3 file into Profi PDF. We handle recordings of any length, from quick voice notes to hour-long podcast episodes.

AI Transcribes & Syncs. Our AI listens, types, and aligns every word to the millisecond. It figures out who is speaking and nails the timing automatically.

Download SRT. Check the captions, tweak nuances in the editor if you want, and export your polished SRT or VTT file instantly.

Your Complete Audio & Video Toolkit

Transcribe, convert, extract — everything audio & video, handled in one place.

AI Transcription

Speech to text with speaker labels, timestamps, and 95%+ accuracy.

Format Conversion

MP3, WAV, M4A, OGG, FLAC — convert any audio or video format instantly.

Video to Audio

Extract audio from MP4, YouTube, Zoom recordings, and more.

Lightning Fast

Most files processed in under three minutes. No waiting around.

No Signup

Start instantly

100% Secure

Auto-deleted

Browser-Based

No installs

People Love These Tools

Podcasters, researchers, marketers, and remote teams use our audio & video tools every day.

Feb 15

Podcast lifesaver

I turn my podcast episodes into YouTube shorts. Profi PDF generates the SRTs in seconds, saving me hours of manual syncing.

Dave Miller

Jan 22

Shockingly accurate

I uploaded a messy voice memo recorded outside. Profi PDF still caught 98% of the words and timed them perfectly. Wild.

Sarah Jenkins

Feb 5

Great for accessibility

We need transcripts and captions for all our training audio. Profi PDF makes it affordable and fast. Highly recommend.

Michael O’Connor

2605 people transcribed files today

@rya**

15 mins ago

@kai****

19 mins ago

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6 mins ago

Trusted and Secured by Industry Experts

Why People Pick Our Audio & Video Tools

Podcast to Video

Turning audio into video clips? Profi PDF gives you the subtitles you need to make your audiograms pop on Instagram and TikTok.

Global Reach

Don’t limit your audience. Translate your audio subtitles into 100+ languages and let the whole world tune in.

Blazing Fast

Waiting is boring. Profi PDF processes audio about 40x faster than real-time. A 60-minute file is done while you grab a coffee.

Make It Accessible

Subtitles aren’t just cool; they are necessary. Make your content accessible to the hard of hearing with zero extra effort.

Editor Included

Use our visual editor to fine-tune timings, correct names, or adjust line breaks. You have total creative control.

Secure & Private

Your audio is your business. We encrypt uploads and permanently delete files after processing. No one listens but the AI.

MP3 to SRT Online

No signup needed. Just pick a tool and go.

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Frequently Asked Questions

Quick answers about our audio & video transcription and conversion tools.