Is this calculation free and private?

Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.

What does the Video Bitrate & File Size Calculator give me?

It works out Estimated Total File Size, Estimated Total File Size, Video Stream Size and Audio Stream Size, updating live as you change the inputs.

What do I need to enter?

Just Video Duration, Target Video Bitrate and Audio Bitrate. Every field has a sensible default you can start from.

Is my data uploaded anywhere?

No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.

Does it work on a phone?

Yes. The layout adapts to small screens and needs no app or signup.

Video Bitrate & File Size Calculator

Calculate video and audio stream file sizes (MB/GB) and bandwidth requirements based on duration, video bitrate, and audio encoding.

100% free
Private in browser
No signup
No watermarks

Video Duration (Minutes)

Target Video Bitrate (Mbps)

Audio Bitrate (kbps)

Estimated Total File Size (MB)

1,308.1

Estimated Total File Size (GB)

1.28

Video Stream Size (MB)

1,287.5

Audio Stream Size (MB)

20.6

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About Video Bitrate & File Size Calculator

Calculate video and audio stream file sizes (MB/GB) and bandwidth requirements based on duration, video bitrate, and audio encoding. Enter Video Duration, Target Video Bitrate and Audio Bitrate and the tool works out Estimated Total File Size, Estimated Total File Size and Video Stream Size straight away. Everything runs in your browser, so your data never leaves your device.

How to use Video Bitrate & File Size Calculator

Enter Video Duration, Target Video Bitrate and Audio Bitrate.
Change any value to see the result update instantly.
Read Estimated Total File Size, Estimated Total File Size and Video Stream Size in the results panel — copy or download what you need.

Key features

Shows Estimated Total File Size (MB)
Shows Estimated Total File Size (GB)
Shows Video Stream Size (MB)
3 adjustable inputs, results update as you type
No signup, no limits

Frequently asked questions

Is this calculation free and private?: Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.
What does the Video Bitrate & File Size Calculator give me?: It works out Estimated Total File Size, Estimated Total File Size, Video Stream Size and Audio Stream Size, updating live as you change the inputs.
What do I need to enter?: Just Video Duration, Target Video Bitrate and Audio Bitrate. Every field has a sensible default you can start from.
Is my data uploaded anywhere?: No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
Does it work on a phone?: Yes. The layout adapts to small screens and needs no app or signup.

Related In-Depth Guides

Learn practical workflows, real-world examples, and expert tips in our comprehensive guides:

Media & Video · 5 min read

Video Bitrate & File Size Calculator Guide: Optimize Bandwidth & Storage for Streaming

How video resolution, framerate, and compression bitrates impact file size in MB/GB. Complete bitrate recommendations for 1080p, 4K, and timelapse projects.