CCTV Camera Requirement Calculator
Tell us about the space you want to cover and get a recommended camera count in seconds. Switch to Installer Mode for exact resolution/codec/fps control and extra engineering figures. Everything runs in your browser -- nothing you enter is ever sent anywhere.
Space to Cover
Leave perimeter or open area at 0 if not applicable. This is a sizing estimate, not an exact placement plan -- a site visit will confirm final positions.
Using typical assumptions for the storage estimate: 4MP camera, H.265, motion-triggered recording, 30-day retention. Switch to Installer Mode to set these exactly.
Recommended Cameras
Frequently asked questions
How many CCTV cameras do I need?
It depends on how many rooms or areas, entry and exit points, and outdoor perimeter or open area you need to cover. This calculator gives a starting recommendation based on typical coverage per camera; a professional site survey is still the best way to confirm exact placement.
Is this an exact placement plan?
No. This gives an approximate camera count using general coverage assumptions. Actual placement depends on mounting height, lens angle, obstructions and lighting, which a site visit accounts for.
What is Installer Mode?
Installer Mode lets you set the exact resolution, codec, frame rate and retention period, and adds recommended NVR channel count and estimated network bandwidth for a more technical sizing pass.