MP4 Converter Online
  • Convert MP4 online without loss quality
  • Convert video/audio files to more than 1000 formats
  • Download then convert videos to MP4/MOV from 1000+ sites

Nowadays, tons of videos are produced for all kind of purpose. A lot of videos are uploaded to the internet. People want to download these videos for their domestic or professional use. But there are many different video formats, they are either not compatible with the device or the media player that you frequently use. Then, you must use the video converters to fulfill the purpose. MP4 video converters can convert video formats to MP4, and vice versa to make it easier for people to watch videos of their choice. These MP4 converter are frequently used and are made available online for users to help them use this service in their daily lives.

This article will introduce top 5 best free MP4 converter online tools that are available for users with the best features and services while ensuring the videos' quality and profitability.

Almost all the online MP4 converters are free, but all the online MP4 converters cannot work offline. To meet with your requirement as much as possible, we also introduce an offline MP4 converter that we think is the best MP4 converter in the market.

Part 1. Top 5 best free MP4 converter online

In this part, we will show you the best free MP4 converters online one by one. Which one is the best MP4 converter online? Depending on your requirements.

1. Zamzar


Zamzar supports conversion of 1000+ formats that you are difficult to find an online converter like this. It can convert MP4 to AVI, 3GP, MOV, FLV, and more. It is the “all to MP4 converter online” in a sense. It is very easy to convert your videos to the other format.

However, Zamzar doesn’t change your video settings. Also, this site can’t support large files which is limited to less than 50MB, unless you pay for it. There are three paid versions, named basic ($9 per month), pro ($16 per month) and business ($25 per month).

  • Easy to use.
  • Any video format to mp4 converter online.
  • Supports batch conversion.
  • Sends the converted files to email.
    • No additional settings.
    • Limited upload size, free version only supports 50MB.

2. Online Video Converter


Online Video Converter is a free, fast, and useful MP4 converter online. It’s easy to use and supports 300+ video formats. It can convert MP4 to HEVC, FLV, MOV, Xvid, and more. This MP4 converter online can support large files. It offers up to a 2GB memory size for you to upload and convert videos freely.

It is security guaranteed. Your files are automatically deleted from the servers a few hours after you are done working with them. Nobody has access to them except you.

  • Simple to use.
  • Supports 300+ video and audio formats.
  • Supports additional settings.
  • Supports to convert large files.
  • Ads on the site.

3. Clip Converter


Clip Converter is a free online tool for converting videos to MP4, MP3, MOV, AVI, or MKV. It works with videos from almost all the video streaming sites like YouTube, Vimeo, Facebook, etc..

You can also easily upload a video you have on your computer for the purposes of converting it to a different format.

Clip Converter has a browser addon that you can install on Chrome, Firefox, or Safari, making it super easy to convert any videos online without having to go directly to the Clip Converter website.

  • Easy to use
  • Free to use
  • Supports to convert URL videos and videos on your device
  • Ads on the site.
  • Limited conversion formats.

4. FreeConvert


The free online tool is FreeConvert. It is a free online file conversion tool to convert your files to another format. FreeConvert supports 500+ file formats. Simply upload your files and convert them to MP4. Alternatively, you can also upload MP4 files and convert them to a different format.

All your files are securely uploaded via HTTP protocol and deleted from the servers automatically after 2 hours. So you can convert your files without worrying about file security and privacy.

  • Easy to use.
  • Supports 500+ video and audio formats.
  • Supports additional settings.
  • Limited upload size.
  • Too many Ads on the site.


FLVTO is an expert video/audio downloader that allows downloading and converting your videos/audios to MP4, MP3, AVI, MP4 HD, and AVI HD format. You simply need to paste the link of the video file to the interface and start the conversion process. Once the process is complete, you can download the converted file from the interface.

In addition to YouTube, video/audio files can be converted from a number of video-hosting sites as well, including Vimeo, Dailymotion, Metacafe, Facebook, and many more.

  • Easy to use.
  • Supports working on Windows, Mac, and Linux systems.
  • Only supports online files.
  • Limited conversion formats.

Part 2. The best MP4 converter that can work offline

As for the best MP4 converter, we recommend Aicoosoft Video Converter without hesitation. It can perform your MP4 videos to various video format in seconds, and vice versa. It can not only convert, but also compress, download, edit and record videos easily. The conversion speed of this converter is 30X faster than other traditional converters that you can find in the market. It works well both on Windows and Mac and meets your requirements better than other converters.

If you are seeking for best MP4 converter that can work offline,  Aicoosoft is undoubtedly your first choice.

Key features of Aicoosoft

The key features that make Aicoosoft one of the best tools for MP4 conversion are:

  • This MP4 video converter uses AI technology for MP4 conversion. Unlike other video converters, it has a better balance between the conversion speed and output video quality.
  • Since the converter uses lossless conversion technology, and advanced GPU acceleration technology, the converted file can keep the same quality with the original file and converts MP4 videos into other format with lightning-fast speed.
  • It is very easy to use and the interface is designed very friendly, so even nonprofessional people can use it to convert MP4 videos.
  • Besides all the above advantages, it also has a built-in audio and video downloader, which enables you to download videos from more than 1000 audio and video sharing sites. You can even download HD videos from streaming sites quickly. It can also convert audio and video formats into more than 1000 audio and video formats without loss of quality.

All these features make Aicoosoft one of the best video converters present in the market.

How to convert MP4 files using Aicoosoft

With Aicoosoft, you can convert MP4 video format with just couple of clicks. Read this quick guide to find out how to convert videos to MP4.

Step1Launch and import video/audio files

Step2Select MP4 as output format

Step3Start the conversion


In this article, we have discussed about top 5 best free MP4 converters online and a professional MP4 converter – Aicoosoft that can work offline. From this article, you might find that MP4 converters online all have integrated features similar to professional video converters. Among them, Zarmar supports 1000+ formats that can be called anything to mp4 converter online. And according to our testing, the output quality produced by these MP4 converters online is not bad. When you need to convert videos on hard drive, DVDs or URL to MP4, you can choose an appropriate tool and follow our guides to complete it easily.

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