Video File Size Estimator
Estimate a video’s file size from video and audio bitrates and duration, in GB, MB and GiB.
Your inputs
Results
Estimated file size
4.615 GB
- In MB
- 4,615.2 MB
- In GiB
- 4.298 GiB
- Per minute
- 38.46 MB/min
≈Estimate based on the stated model and assumptions
What this calculator does
A video’s file size is essentially its combined video and audio bitrate multiplied by its duration. Use this to plan storage for recordings, uploads and archives.
Formula and method
Bytes = (video bitrate + audio bitrate) × seconds ÷ 8 × (1 + container overhead)
Worked example
Calculated by this tool with its default inputs:
Inputs
- Video bitrate: 5 Mbps
- Audio bitrate: 128 kbps
- Hours: 2
- Minutes: 0
- Container overhead: 0 %
Results
- Estimated file size: 4.615 GB
- In MB: 4,615.2 MB
- In GiB: 4.298 GiB
- Per minute: 38.46 MB/min
How to read the results
Size per minute helps plan recording storage.
Assumptions and limitations
- Variable-bitrate encodes average out over the file.
Questions
What bitrate is 1080p?
It varies by codec and content; streaming 1080p often uses roughly 4–8 Mbps.
Methodology and verification
- Result type
- Estimate based on the stated model and assumptions
- Formula version
- 1.0
- Automated verification
- 2 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Inputs are added to a share link only if you choose to include them. Privacy policy