GlenCalc

Video file size calculator

Size = bitrate × time. Bitrates are in bits per second; file sizes are in bytes, 8 bits each.

Your answer

File size3.69 GB
In megabytes3,686 MB
As most computers show it3.43 GiB
Per minute61.4 MB

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How we worked it out

Updated as you change the numbers.

  1. Size in megabytes = (video Mbps + audio kbps ÷ 1000) × seconds ÷ 8.
  2. GB = MB ÷ 1000; Windows shows GiB = bytes ÷ 1,073,741,824.

Method and assumptions

Uses decimal units (1 GB = 1,000 MB), as drive makers and most apps do. Containers add a little overhead, and variable-bitrate files vary around the average.

Questions

How big is a 1-hour video at 8 Mbps with 192 kbps audio?

About 3.69 GB (3.43 GiB).

Sources

Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.

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