CCTV storage calculator

Channels, resolution and retention days. Returns the volume in terabytes and the matching recorder size. Free access, no sign-up.

Project data

Parameters

The result is an engineering estimate for sizing. The real scene —motion, night noise, rain— moves the bitrate above or below the typical value.

How it calculates

Storage calculator · Assumptions

Base bitrate at 15 fps in H.265: 2 MP 1.5 Mbps · 4 MP 2.5 · 5 MP 3.0 · 8 MP 5.0 · 12 MP 7.0
H.264: Taken as 1.8 times the H.265 bitrate, at the same resolution and frame rate
Frames per second: Bitrate scales with the square root of the fps change, not linearly
Motion recording: Estimated at 40 % of the time; on schedule, 12 hours a day
Margin: 15 % over the calculated volume, for the file system and scene peaks
Drives: Split suggested in 4, 6, 8, 10 or 12 TB units depending on the total

Send the number of points and the required retention and we confirm the recorder and the drives before you quote.