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Video File Size Calculator
Estimate an encoded video file size from duration and bitrate before you export or upload.
Inputs
Duration and video/audio bitrate. Values stay in this browser.
Result
Estimated megabytes and gigabytes with the formula shown
Estimated size
30.0 MB
≈ 0.030 GB. Add container/audio overhead before choosing a hard upload limit.
How this estimate works
No source media is uploaded by these calculators. A selected file is used only for local metadata inspection.
- All calculations run locally in the browser.
- Bitrate and file size are estimates; variable bitrate and container overhead can change exports.
- Safe zones are conservative review aids, not platform guarantees.
Updated 2026-08-04
Frequently asked questions
Is the result exact?
No. Container overhead, variable bitrate, audio, and metadata can change the final file size.
Which bitrate should I enter?
Use the target average bitrate in Mbps from your encoder or export preset.
Need to edit the file, not just inspect it?
After the result, continue into a focused local tool or the full Studio when the job needs a timeline.