Step 1

Online Video Converter - ZAMZAR
URL Converter - Online Video Converter
Online Video Converter - CloudConvert
123APPS Video Converter
Video Converter to MP4/MP3 - Convertio
Convert Video Online - Kapwing
HD Online Video Converter - Aiseesoft
FAQs of Online Video Converter

Top 7 Free Online Video Converters to Convert Any Video to MP4/MP3

Jordan ScottJordan ScottUpdated on May 11, 2021Video Converter

When you can't open a video with unsupported format, or just want to reduce the size of your video file, you need a video converter tool. Good thing is, there are a large number of online video converters (most of them are free) that can help you make the video conversions with ease.

Best Online Video Converter

Considering your need, we like to give you the review and comparison of 7 best free online video converters with their key features and some disadvantages. You can pick your preferred one and then convert any video to MP4, MOV, FLV, AVI, etc. or an audio format like MP3 quickly and easily.

Part 1. Free Online Video Converter - ZAMZAR

ZAMZAR is a very popular online video converter tool which supports many frequently-used video and audio formats including MP4, MKV, AVI, FLV, MPEG, MOV, AAC, MP3, M4A, WMA, WAV, and more. Moreover, it can work as a great file converter to convert your documents and images. ZAMZAR supports over 1200 file formats. What’s more, as a free online video converter, it requires no software downloading for the file converting.


Apart from the local files, ZAMZAR enables you to convert online video and audio file through URL. The file size is limited to 50MB as a free online video converter. It also offers 3 paid versions for you, with the maximum file size of 200MB, 400MB, and 2GB.

This online video converter is compatible with any web browser like Chrome, IE, Firefox and Safari. When you want to convert a video or audio file, just upload your file, select a right output format, and then click on the Convert Now button. After converting, you need to click Download button to save the converted file on your computer.


Part 2. URL Converter - OVC

Online Video Converter is mainly used to convert video from online site, and then save it on your local computer. It has the capability to convert URL to a video and audio file. So you can take it as a free online video converter for YouTube, Facebook, Twitter, Vimeo, and more. One thing you should know is that, this online video converter can only convert YouTube to MP4 or MP3. No other output formats are offered.

Online Video Converter

When you want to convert online video like YouTube to MP4, you should copy the video link and paste it to the converter. After that, one click on the Convert button will guide you to download and convert YouTube video. This free online video converter enables you to convert 720p HD video. If you want to convert your local files, you should choose the Convert Offline Videos option. It is compatible with MP4, AVI, MPG, MOV, WMV, MKV, M4V, WEBM, FLV, MP3, AAC, OGG, WMA, M4A, FLAC, WAV, and more.

Download Convert Youtube to MP4

Part 3. Free Online Video Converter - CloudConvert

CloudConvert is an all-featured online file converter which supports nearly all video, audio, document, ebook, archive, image, spreadsheet, and presentation formats. It is compatible with over 200 formats. Besides your local video and audio files, it enables you to convert video by ULR or convert file from Google Drive, OneDrive and Dropbox.


You can click on the Convert File button to upload the file you want to convert. Then you will be guided to a specific converter page. Select a suitable output video, audio or image format and then click on the Convert button.

Convert video to MP3

As a free online video converter, CloudConvert allows you to convert a file less than 1GB for free account. You need to buy a package to convert larger files. What’s more, you are only allowed to convert 10 files one day. To continue the file converting, you are required to sign up for a free CloudConvert account.

Part 4. Online Video Converter - 123APPS Video Converter

123APP Video Converter is a free web video converting app that can help you change the video format, resolution or size right in your browser. It supports any popular web browser including IE, Firefox, Chrome and Safari. This free online video converter can offer you high-performance conversions. You are allowed to upload files up to 4GB in size.

123APP Video Converter

This online video converter requires no software downloading or even the account. You can directly open it on your browser and start the converting. 123APP Video Converter is able to convert more than 300 formats. It can convert videos from your local computer, Dropbox, Google Drive and URL. This free converter tool also enables you to adjust various settings like video codec, audio codec, output file size and more. One big disadvantage of this online video converter is that, you can see many ads while using it.

Part 5. Online Video Converter to MP4/MP3 - Convertio

Convertio is another all-featured file converter. It has 300+ formats supported including videos, audios, archives, images, ebooks, documents and more. As a free online video converter, Convertio allows you to convert a file from local hard drive, Dropbox, Google Drive and online URL. It provides users with a cloud converting feature which won’t consume any capacity from your computer.

Free Online Video Converter Convertio

This online file converter highly supports almost all file formats. That means it can help you make any video and audio conversions according to your need. Moreover, you won’t see any ads while the usage of this free converter. It has the security guaranteed that anyone else won’t access your files. Convertio also carries some advanced options for you to custom the output quality, aspect ratio, codec and other settings.

If you don’t sign up a Convertio account, you are only allowed to convert a file less than 100MB. What’s more, there are some other limits of the converting times, priority and more, even you are using a paid version. So, when you choose to upgrade to a paid version, you should select a right plan.

Part 6. Convert Video Online - Kapwing

Kapwing is an easy-to-use online converter which allows you to convert video to MP4, MP3 or another format based on your need. In addition, it has the specific features to convert GIF and JPG images online. In a word, Kapwing is a powerful converting tool for converting video and audio files and creating images. It offers a free online converter page to convert local and online files.


There is no file size limit for the conversion. But you can only convert a video less than 7 minutes. You have to cut the video when it longer than that. Compared with other online converters, Kapwing is equipped with more useful functions. For instance, it enables you to add text and image, custom timelime and scenes, add audio track, change subtitles, and do more operations. Kapwing allows you to convert video to MP4, GIF or MP3 free online. More than just a free online video converter, Kapwing is also a powerful editor.

Convert Edit Video

Part 7. HD Online Video Converter - Aiseesoft Free Online Video Converter

Aiseesoft Free Online Video Converter is the famous online file converting software that supports all frequently-used video and audio formats like MP4, MKV, FLV, RMVB, AVI, MOV, WMV, OGG, VOB, WAV, AAC, M4A, MP3, FLAC, APE, and more. It is able to convert videos without any image and sound quality loss. Moreover, there is no conversion limit of this online video converter.

Aiseesoft Free Online Video Converter

As a free web-based converter, Aiseesoft Free Online Video Converter is compatible with any popular browser. So, when you want to convert files, you can directly open it on your web. Before the conversion, you can adjust video resolution, video encoder, frame rate, bitrate, audio encoder, sample rate, channel and other settings.

One thing you should know is that, you are required to install a small launcher file for the video converting. So, this online converter seems to be one kind of desktop software. Because of that, it won’t put any limits for the video audio conversion. What’s more, it can output a file while keeping the original quality. This online video converter doesn’t allow you to upload online video through URL.

Part 8. FAQs of Online Video Converter

How does a video converter tool work?

Video converter tools mainly use two methods to make the conversion. One can change the file container format without making any changes in the video. The other method can compress video by using the transcoding way.

Is MP4 compressed?

Yes. MP4 is a compressed file format. The MP4 file can store videos compressed with different codecs. You may know that, some popular MP4 video codecs are MPEG-4, H.264, and H.265.

Is MP4 the same as MPEG-4?

No. You can’t simply consider MPEG-4 as MP4. Even though many people take MP4 as the shorten name of MPEG-4, they are not the same. MP4 is mainly known as the most popular video container format to store media files. While MPEG-4 is a standard for compressing audio and video data.

Can I convert video from low quality to high quality?

Yes. Many converting tools including free online video converters we recommended above that can change the video quality from low to high. But you should know that, the converted video file is not in real HD structure. So even you convert SD to HD or even 4K, you still get a video with the similar visual effects.

How can I translate a video from voice to text?

To convert video to text, you will need a video to text converter. e.g. Happy Scribe, it is a bootstrapped startup offering transcription and subtitles as a platform. The transcription software uses artificial intelligence and speech recognition algorithms to transcribe audio/video to text in a matter of minutes with 85% accuracy. In addition to that, they also offer several transcription tools like an online editor to proofread the transcripts. The video/audio to text software can be integrated with various platforms like YouTube, Dropbox, Vimeo... etc. You can import and export your files in multiple audio, text and subtitle formats.


After reading this post, you can get 7 best free online video converters. Whether you want to change the unsupported format, or reduce the video file size, you can rely on any one of them. But you should know that, they are not the only options out there. There are still quite a few to choose from depending on what you need an online video converter for. You can also share it with other readers if you have any better recommendation.

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