Video Bitrate Calculator
File size, bitrate, or duration from the other two.
File size
3.60 GB
3600.0 MB · 3.600 GB
Container overhead (audio, metadata, mp4 boxes) adds 5–15% to the raw stream size; this calculator gives a clean theoretical number. Most YouTube uploads at 1080p use 8 Mbps, 4K HDR around 50 Mbps. Audio is small enough it usually doesn't matter for back-of-napkin sizing.
About
Pick what you're solving for and fill in the other two. Get file size from bitrate × duration, required bitrate to fit a target size, or how long a clip can be at a given bitrate and ceiling.
How to use
- Pick what to solve for.
- Enter the other two values.
- Read the answer.
FAQ
Why does my real file end up bigger?+
Container overhead (audio, metadata, mp4 boxes) adds 5–15%. Audio is typically 128–256 kbps which is small, but it adds up on long content. The number here is a clean theoretical raw stream.