Calculators for the numbers behind video work
How big will this file be, how long will it take to upload, and will it fit on the drive? Five small tools answer those questions with the arithmetic shown, so you can check the result rather than trust it.
Calculators
Video File Size Calculator
Estimate file size from duration and bitrate.
Open calculator →Video Upload Time Calculator
How long will a file take to upload?
Open calculator →Recording Storage Calculator
Plan storage for a recurring recording schedule.
Open calculator →Bitrate Budget Calculator
Fit a recording under a file size limit.
Open calculator →Recording Capacity Calculator
How many hours fit on a disk?
Open calculator →
Two units worth knowing
Mbps is not MB/s. Bitrates and internet speeds are in megabits per second; file sizes and many transfer displays are in megabytes. There are 8 bits in a byte, so 80 Mbps is 10 MB/s.
GB is not GiB. A gigabyte is 1,000,000,000 bytes; a gibibyte is 1,073,741,824 bytes. Drive makers use GB and TB, while some operating systems show GiB under the label "GB". Each calculator lets you pick the unit explicitly.
All calculators share one set of formulas, so a result from one tool agrees with the others. Results are estimates: real files include container overhead and variable bitrate, and real uploads rarely reach the advertised speed.