CCTV Camera Coverage Calculator

Estimate how many cameras are needed to cover a given area.

Inputs

Total Area to Cover (sq ft)

Effective Coverage per Camera (sq ft)

A typical fixed camera effectively covers roughly 600-1,000 sq ft depending on mounting height and lens.

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Cameras Needed (est.)

Spark says

How it's calculated

Formula

Cameras = \lceil \dfrac{Total\ Area}{Coverage\ per\ Camera} \rceil

Coverage\ per\ Camera: — Effective area one camera can usefully monitor

What is the CCTV Camera Coverage Calculator?

This is a rough planning estimate — real coverage per camera depends heavily on lens field of view, mounting height, and how much overlap you want between adjacent cameras' views.

How to use it

1 Enter the total area you need to monitor.
2 Enter a realistic effective coverage area per camera for your lens and mounting setup.

Worked examples

5,000 sq ft area, 800 sq ft per camera

About 7 cameras needed.

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Limitations

•This is a simple area-division estimate, not a real site survey — corners, blind spots, chokepoints (doors, gates) and desired overlap all affect the actual camera count a professional installer would recommend.

Frequently asked questions

Should cameras overlap coverage areas?

Yes, typically — some overlap between adjacent cameras avoids blind spots and helps with tracking a subject as they move between fields of view.