CCTV planning toolkit
Seven checks.
One honest method.
Each calculator solves a distinct planning question. Start with the connected system worksheet, or open the smallest tool that matches the decision in front of you.
System planner
Model mixed camera groups once and check storage, recording traffic, PoE draw, channel headroom, and switch capacity together.
Open tool ↗02 / TB requiredStorage
Estimate the decimal terabytes needed from camera count, measured or stated bitrate, recording schedule, activity, retention, and overhead.
Open tool ↗03 / Mb/s requiredBandwidth
Separate local recording traffic from remote-viewing upload and add explicit capacity headroom.
Open tool ↗04 / Watts requiredPoE budget
Check total camera load, switch power headroom, and the per-port limit using each camera’s maximum stated draw.
Open tool ↗05 / Usable TBRAID capacity
Compare raw, protected, and working capacity for single-disk, RAID 1, RAID 5, RAID 6, and RAID 10 layouts.
Open tool ↗06 / Days retainedmicroSD retention
Estimate how many hours or days fit on a camera card from usable capacity, bitrate, schedule, activity, and overhead.
Open tool ↗07 / Coverage geometryField of view
Estimate horizontal angle, scene width, and pixels per metre from the exact sensor width, focal length, distance, and image width.
Open tool ↗