Video File Size Calculator
Storage needed for any bitrate and duration.
Enter your values
Results update instantly as you type — no submit needed.
Results
- File size
- 11.06 GB
- Per minute
- 377.4 MB
- Hours on a 1 TB drive
- 46.3
- Upload time at 20 Mbps
- 75.5 minutes
Quick answer
Video file size is bitrate × duration; at 4K 100 Mbps, one minute consumes about 750 MB.
Size (MB) = bitrate (Mbps) × seconds ÷ 8
How to use the Video File Size Calculator
- 1Enter your recording bitrate.
- 2Enter the duration in minutes.
- 3Add the audio bitrate for an accurate total.
Frequently asked questions
What bitrate should I record at?
1080p30 looks good at 8–12 Mbps for delivery; 4K editing masters usually run 50–100 Mbps or higher.
Does resolution alone determine size?
No — bitrate does. A low-bitrate 4K file can be smaller than a high-bitrate 1080p file, but it will look worse.