Security Camera Coverage Calculator

The calculator takes the larger of two separate numbers: cameras needed for perimeter coverage (perimeter length divided by 55 ft, rounded up) and cameras needed for entry points (one per door, gate, or garage). If your perimeter already requires more cameras than you have entry points, adding another entry point won't change the outdoor total until it exceeds the perimeter-driven count.

The current calculation is driven entirely by perimeter length and entry point count — property area is collected as an input and shown in the calculation steps but doesn't feed into cameras needed, storage, or cost. A larger property with a short perimeter (like a narrow, deep lot) will get the same camera recommendation as a smaller one with the same perimeter.

Because it would read 100% no matter what you entered. The outdoor count is your perimeter divided by 55 ft and rounded up (or your entry-point count, if that is larger), so the theoretical linear feet those cameras could watch always meets or exceeds the perimeter you typed in. A tile that never moves looks like a result but carries no information, and worse, it implies full coverage the layout can't deliver: it would say nothing about corners, obstructions, elevation changes, or the real overlap between adjacent fields of view, so an irregularly shaped property would still have genuine blind spots. Walk the property and check sightlines instead.

The calculator applies a volume discount: each camera is billed at $3/month up to four cameras total, then the whole fleet drops to $2.50/camera/month once you exceed four. This models how most cloud storage plans price bulk camera subscriptions rather than charging every camera the standalone rate.