Convert MP3 Audio to SRT Subtitles

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

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1.5M users
17,150 reviews

How It Works

MP3 to SRT Converter — Audio to Subtitles Online | Cacao Docs
1
Upload MP3. Drag your MP3 file into Cacao Docs. We handle recordings of any length, from quick voice notes to hour-long podcast episodes.
2
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.
3
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. Cacao Docs generates the SRTs in seconds, saving me hours of manual syncing.
Dave MillerInstagram logo
Dave Miller
Jan 22
Shockingly accurate
I uploaded a messy voice memo recorded outside. Cacao Docs still caught 98% of the words and timed them perfectly. Wild.
Sarah JenkinsInstagram logo
Sarah Jenkins
Feb 5
Great for accessibility
We need transcripts and captions for all our training audio. Cacao Docs makes it affordable and fast. Highly recommend.
Michael O’ConnorInstagram logo
Michael O’Connor
824 people transcribed files today
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Trusted and Secured by Industry Experts

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Why People Pick Our Audio & Video Tools

Podcast to Video

Turning audio into video clips? Cacao Docs 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. Cacao Docs 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.

Podcast to Video

Turning audio into video clips? Cacao Docs 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. Cacao Docs 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.

Convert MP3 to SRT
4.6
1,340 reviews
4.5
13,920 reviews
4.6
4,550 reviews

Frequently Asked Questions

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

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MP3 to SRT Converter — Audio to Subtitles Online | Cacao Docs - Cacao Docs