7 Best Free Online Video File Size Calculator Websites

Here is a list of the best free online video file size calculator tools. Videos take up large storage space. The better the video quality is the more size it is going to take. With that, it can be handy to determine how much storage space a video file can take. Whether you are recording or downloading, by having an idea about the eventual size of the video, you can be sure if you have enough storage space for it. It can also be helpful and plan how to share or upload the video on online platforms.

In this post, I’m covering 7 websites where you can calculate the video file size. Each website offers a dedicated tool to determine the video size for a given length of the video. The primary parameters you need to provide are video resolution, framerate, and length. All these tools follow their own ways to calculate the video size. You can get an overview of each tool in the table below. From there, you can jump to any of these tools and read about them in detail.

My Favorite Video File Size Calculator

VideoProc.com is my favorite website on this list to calculate video file size online. The tool here covers various camera devices as well as video formats. You can simply pick either a camera device or format for the calculation. It automatically loads the respective parameters which you can re-configure as well. This way, you can easily determine the accurate video file size.

You can also check out our other lists of the best free online Video Resizer websites, Open Source Video Converter Software, and Video Compressor Software for Windows.

Overview Table:

Websites	Based on	Parameters
VideoProc.com	Device/Format	Resolution, Length, Frame Rate, Frame Size, Bit Rate & Bit/pixel
OmniCalculator.com	Format	Length, Frame Rate & Frame Size
Toolstud.io	Resolution	Length, Frame Rate & Compression
LambertInstruments.com	Resolution	Length, Frame Rate & Bits
DigitalRebellion.com	Format	Length, Frame Rate & Resolution
Calculator.academy	Resolution	Length & Frame Rate
WolframAlpha.com	Bitrate	Length

VideoProc.com

VideoProc.com has a free online video file size calculator tool. This tool can help you estimate the size of a video file based on either the device or the format. It has a collection of camera devices as well as various video formats. You can pick the device or the format that you want to use. Based on that, it automatically loads the default values of that device or format into the calculator. You can further configure the settings as per your recording requirements. With the video length, you can get what size the video is going to be.

How to calculate video file size online on VideoProc?

• Go to this calculator using the direct link given below.
• Choose whether you want to go with Device or Format. Then pick the respective for your calculation.
• Configure the video parameters as per your shooting profile.
• This gets you the approximate video file size.

Highlights:

• Based on: Device or Format.
• Parameters: Resolution, Length, Frame Rate, Frame Size, Bit Rate, and Bit/pixel.

OmniCalculator.com

OmniCalculator.com is a popular website offering online calculators for various tasks and needs. It also has a free online video file size calculator. This tool uses the video format for the calculator. It lists dozens of file formats in a dropdown. You can pick the format you want to work with. After that, you can configure additional parameters such as frame rate and video length. With that, you can estimate the file size of a video.

How to calculate video file size online on OmniCalculator?

• Open this calculator on OmniCalculator using the link given below.
• Pick in which format you are going to record the video.
• Then enter the length along with other parameters.
• This gets you the approximate video file size.

Highlights:

• Based on: Format.
• Parameters: Length, Frame Rate & Frame Size.

Toolstud.io

Toolstud.io offers a free online video file size calculator tool. This tool estimates the video file size based on the resolution and the compression. It has a list of commonly used compressions. You can pick the compression and then add the resolution. Then you just have to configure your video framerate and length. With that information, this tool gives you a size estimation of the video. It breaks down the file size for 1 frame and for 1 second.

How to calculate video file size online on Toolstud?

• Follow the link given below to open this calculator in your browser.
• Enter the required video parameters and select compression.
• Then click the Estimate Video Size! button to get the output.

Highlights:

• Based on: Resolution.
• Parameters: Length, Frame Rate & Frame Size.

LambertInstruments.com

LambertInstruments.com has a free video size calculator. This calculator helps you find the size of the video recorded by a monochrome high-speed camera. It makes the estimation based on the camera sensor properties. This includes the resolution, bits, and framerate. Also, you have to enter the length of the video in seconds. For those inputs, it gives you the size of a frame, data stream, video size, and recording time for 8/16 GB of storage. The recording time for specific storage capacity can tell how long you can record before your memory card gets full.

How to calculate video file size online on LambertInstruments?

• Use the link given below to open this calculator in your browser.
• Enter the required video parameters and select compression.
• Then click the CALCULATE button to get the output.

Highlights:

• Based on: Resolution.
• Parameters: Length, Frame Rate & Bits.

DigitalRebellion.com

DigitalRebellion.com is another free website to calculate video file size online. This website offers a simple calculator that calculates the video size based on the format and video parameters. It lists various commonly used video formats including ProRes. When you pick a format, it automatically fetches the resolution. Then you just have to pick the framerate of the video. Lastly, you have to provide the video length. As soon as you fill in all the required information, this tool instantly shows you the size of the video.

How to calculate video file size online on DigitalRebellion?

• Open this calculator using the direct link provided below.
• Pick the format for the video and fill in the video parameters.
• Doing that shows you the estimated video file size.

Highlights:

• Based on: Format.
• Parameters: Length, Frame Rate & Resolution.

Calculator.academy

Calculator.academy is a free website with an online video file size calculator. This is a simple calculator that determines the video file size based on video resolution and framerate. It asks for the resolution as pixel length and width. For a 1920×1080 resolution, you can fill 1920 as pixel length and 1080 as pixel width. Then with the FPS and video length, you can determine the video file size.

How to calculate video file size online on Calculator.academy?

• Go to this calculator using the direct link provided below.
• Enter the Pixel Length and Width into the calculator.
• Then add the FPS and the total time of the video.
• After that, click the Calculate button to get the video size.

Highlights:

• Based on: Resolution.
• Parameters: Length & Frame Rate.

WolframAlpha.com

WolframAlpha.com is yet another free website where you can calculate the video file size online. This is a very minimal calculator that estimates the video size based on the bitrate. Bitrate is basically the depth of information in the video. Every video has a bitrate. To use this calculator, you need to know the bitrate of the video. Then with the video length, you can estimate the video file size.

How to calculate video file size online on WolframAlpha?

• Open this calculator using the direct link provided below.
• Enter the video bitrate and length into the calculator.
• After that, click the Submit button to get the video size.

Highlights:

• Based on: Bitrate.
• Parameters: Length.