CCTV Planning Tool · 02 of 10

Camera Coverage Calculator

Tell us about your space and what you want to achieve. We'll work out exactly how many cameras you need, which lens to use, and where to mount them.

How many cameras do you actually need?

Every CCTV quote uses a different camera count — sometimes 4, sometimes 14, for the same room. So who's right?

The answer comes from three things: your space size, what you want the cameras to do (just detect movement, or identify a face?), and which lens you use. Get any of these wrong and you'll either overspend on cameras you don't need, or have a system that doesn't actually do its job.

This calculator works it out for you based on the same standards (EN 62676-4) used by serious security planners worldwide.

A real example: A 20 m × 10 m office where you want to identify visitors at the door.

• With a 2.8 mm wide lens: identification range is only ~6 m. You'd need 4 cameras.
• With a 6 mm lens: identification range jumps to ~12 m. Just 2 cameras do the job.

Same office, same goal. The right lens means half the cost.

Plan your coverage

Pick your goal and your space. We'll handle the maths.
Access control: recognise known people (staff, members, regular visitors).
0cameras
to cover 20 m × 10 m at 125 PPM
Recommended lens: —
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Top-down layout · to scale camera field of view

Bill of materials

Cameras needed
0 units
—
Effective range per camera
0 m
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Estimated cable
0 m
~1.5× perimeter rule

Get this plan as a PDF

A clean, branded layout plan with camera count, lens, floor diagram, and bill of materials. Share it with your installer or client.