Video File Size Calculator
Estimate how big a video file will be from its length, resolution and bitrate.
How it works
- 1Enter the video length.
- 2Pick a resolution (recommended bitrate) or enter your own bitrate.
- 3Read the estimated size.
Features
- Recommended bitrates for 360p to 4K.
- 30 or 60 fps.
- Custom video bitrate.
- Size per minute too.
Frequently asked questions
How is size calculated?
Size = (video bitrate + audio bitrate) × duration ÷ 8.
Why is my real file different?
Encoders vary the bitrate with the content, and containers add a little overhead.
Is anything sent to a server?
No. Everything is calculated in your browser.
Related tools
Bitrate CalculatorFind the video bitrate needed to hit a target file size.Upload Time CalculatorEstimate how long a file takes to upload at your connection speed.Video CompressorBetaMake a video file smaller while keeping it watchable, with an optional lower resolution.Aspect Ratio CalculatorFind the aspect ratio of any size, or scale dimensions while keeping the ratio.