Video Storage Calculator

The tool turns the storage into megabits by multiplying gigabytes by 1000 then by 8, and divides that by the bitrate to get seconds. For 64 GB at 50 Mbps that is 512000 megabits over 50, which is 10240 seconds, about 170.67 minutes or 2 hours 50 minutes 40 seconds.

It is the footage size for one minute of recording, worked out as bitrate times 60 divided by 8. At 50 Mbps that is 375 MB per minute, which helps you judge how many minutes of B roll or interview you can offload before a card is full.

A higher bitrate writes more data every second, so the same card fills faster. Doubling the bitrate roughly halves how long you can film, while halving it roughly doubles your time.

It uses decimal gigabytes, where 1 GB is 1000 MB, which matches how card and drive capacities are printed on the label. If you prefer binary gibibytes (1024 based), the true time will be a little shorter than the estimate.

Cards format to slightly less than their labeled size, and variable bitrate footage often runs above its stated average during fast motion. Treat the result as a close upper estimate rather than a guarantee.

The calculator only uses the single bitrate you enter. For the most accurate answer, add your audio bitrate to the video bitrate before typing it in, since audio is usually a small extra 128 to 512 kbps.

Look in the video quality or record format menu, where it is listed in Mbps next to the resolution and frame rate. If only a codec name is shown, the manual or spec sheet usually lists the bitrate for each mode.

Yes. Enter the drive size and the stream bitrate of one camera to see how long a single feed records. For several cameras, add their bitrates together, or divide the single camera time by the number of cameras.

Yes. The two numbers never leave your device because the math runs entirely in your browser, so nothing is sent to a server or stored.