How this calculator works
Use an average bitrate for variable-bitrate video. Optional audio bitrate is added separately, so leave it at zero if already included in the total bitrate. This estimate excludes container overhead and filesystem allocation.
The formula
Bytes = (video bits/second + audio bits/second) × seconds / 8A quick example
8 Mbps for 1 hour with no added audio uses approximately 3.6 GB.
How to use this calculator
- Enter the labeled values, using a decimal point for fractions.
- Check the units and assumptions.
- Calculate, review the result and copy it if needed.
A few common questions
How is this result calculated?
Bytes = (video bits/second + audio bits/second) × seconds / 8
What assumptions should I check?
Use an average bitrate for variable-bitrate video. Optional audio bitrate is added separately, so leave it at zero if already included in the total bitrate. This estimate excludes container overhead and filesystem allocation.
Can I see a worked example?
8 Mbps for 1 hour with no added audio uses approximately 3.6 GB.