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Best 6 Free MP3 to Subtitle Converters to Change MP3 to SRT

“I am creating a video presentation using a few MP3 tracks and wish to add subtitles to it as well. Can I convert the audio in MP3 to SRT subtitles? And, which MP3 to subtitle converter should I use?”

It is entirely possible if you aim to convert MP3 audio into text in SRT format. The requirement generally occurs when you wish to create a slideshow or presentation with audio and add subtitles of the soundtrack to help the audience understand the content better. You only need access to a reliable MP3 to subtitle converter to complete the said process. This article will highlight the top tools to convert MP3 to SRT without any hassle!

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Part 1. Top 6 Free Ways to Convert MP3 to SRT 

Check out the 6 online tools that instantly enable you to convert MP3 to SRT for free!

  1. Sonix
  2. ConvertHelper
  3. Veed
  4. Keevi
  5. HappyScribe
  6. Amber Script

1. Sonix

Sonix uses advanced neural net processing and machine learning to turn your audio file into subtitles in a few minutes. It is basically a transcription tool that converts audio into SRT format rather than a TXT file. Moreover, it offers 30 min free credit only to turn MP3 into SRT.


Free trial


User-friendly interface


Account creation is mandatory

Required credit card information

Pricey subscription plans

2. ConvertHelper

ConvertHelper is a multilingual platform that offers an easy interface to convert MP3 files into SRT subtitles. Besides, the tool is entirely free. Other services available are video, ebook, and image conversion.


Chrome Extension

It also offers other subtitle formats like VTT and SUB


No customer support service

Sometimes fail to recognize the audio


Veed converter offers a free speech-to-text service to convert audio tracks into SRT subtitles in no time. The pricing plans are reasonable. However, if you wish to manage a media file for free using the Veed tool, it will be watermarked.

Fast and reliable

Supports various audio formats, such as WAV, M4A, and AAC


10-minute audio transcription for free

No customer support

4. Keevi

Keevi can convert MP3 to SRT subs or texts within a handful of minutes without your needing to download any software or app. Moreover, the service is free to use, and there is no requirement to acquire any technical skill as the interactive UI guides you throughout the file conversion process.



Supports multiple languages


It sometimes crashes converting files

5. HappyScribe

HappyScribe can convert the transcript of an audio recording into texts in 60+ languages. Its interface is user-friendly and simple, which helps make your resulting subtitles both quick and easy for you to edit.


Cloud integration



It takes 24 hours to complete the transcription

Only 10 minutes are free

Sign-up is required

6. Amber Script

AmberScript is an online service that manages your files in MP3 and transcribes them into the TXT format. Moreover, the MP3 to text conversion is both simpler and faster thanks to the tool’s native Automatic Speech Recognition or ASR technology.

Amber Script

It supports 30 minutes for free

Transcribes 39 languages



Low accuracy with the free version

Part 2. Bonus Tips: How to Auto Generate Subtitles from Video Directly

The common aspect of all the online MP3 to SRT converters listed in the previous section is that you can not transcribe an audio file past a specific limit for free.

This limit is not so helpful when you require to convert a larger audio file into subtitles quickly. If that is the case with you, the best and only solution available is using the Wondershare UniConverter’s Subtitle Editor feature, which offers the auto subtitles generator.

First, create a video slideshow or presentation using the MP3, and upload it to the UniConverter. Its function will carefully and accurately listen to speech within a video file and converts it into SRT subs in multiple languages. Accessibility isn’t an issue as the UniConverter is available on all modern Windows and macOS versions.

Here are some additional and handy features available with the Subtitle Editor in UniConverter:

wondershare uniconverter 13

Wondershare UniConverter — All-in-one Video Toolbox for Windows and Mac.

safe download Security Verified. 3,591,664 people have downloaded it.

Best Subtitle Editor for Mac and Windows that offers munual and automatic way to add/edit subtitles.

Put subtitles on movie to watch without any hassle.

Convert videos to 1000+ formats at 90x faster speed than online ways.

Batch Compress videos without quality loss.

Easy-to-use video editor to trim, cut, crop, add watermark, change video speed, etc.

Nice AI-based features including Watermark Editor, Smart Trimmer, Auto Reframe, Background Remover, and more.

Powerful Toolbox including GIF Maker, Image Converter, CD Burner, Fix Media Metadata, etc.

If you do not know how to generate subtitles from videos automatically, then check out the step-by-step guide below:

Step 1 Upload the Video to UniConverter

First, run the program on your desktop. Once the home screen is displayed, click on Toolbox on the left. There, under the Value Added Features section, select Subtitle Editor, which will open a new window. There, click Add to import the video.

Import video

Step 2 Access the Auto Subtitle Feature

Click on the Auto-Generate Subtitle button, and select the Video Language before hitting the Start Now tab.

Open Auto Subtitle

Step 3 Export the Subtitles

Once the SRT file is created, you can stay in the Editor and personalize it by adjusting its position and font style. Finally, click Export and select the SRT file option before tapping the Export button again to download it.

Generate subtitles automatically


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