Drop in a floor plan, place cameras and see exactly what each one covers: field of view, pixels per metre and DORI ranges, with walls and doors blocking the view.
The checks you'd otherwise do with a lens calculator, a ruler and a lot of guesswork.
Each camera draws its real coverage wedge, from the model's published horizontal field of view.
See where a camera is good enough to detect, observe, recognise or identify a person.
Walls, doors and obstacles cut the coverage by height, so blind spots show up.
Give each room a target level and get a pass or fail coverage check per room.
Preview roughly what a camera will see from where you've put it.
Save the project as a file to pick up later, and export the plan as a PNG.
A first layout takes a few minutes.
A PDF, PNG or JPG. No plan to hand? Start from the example office.
Click both ends of a dimension you know, then trace the walls and doors that matter.
Pick models from the library, drag them into place and see coverage and pixel density update live.
A camera's field of view is how wide it sees. The further from the camera, the wider the scene, so its pixels are spread more thinly. Pixel density measures that: the number of horizontal pixels covering one metre of the scene (px/m).
A 1920-pixel camera looking at a scene 7.7 m wide gives about 250 px/m, enough to identify someone. The same camera at a point where the scene is 31 m wide gives about 62 px/m: you can see what's happening, but not who it is.
DORI names those levels. The figures below are from EN 62676-4, the European standard for CCTV application. Pick the level you need in FOV and it shows where each camera meets it, so you can see where a camera stops being useful for the job.
The full guide: how to calculate field of view and pixel density →
Field of view and DORI distances for each camera model →
| Level | px/m | What you get |
|---|---|---|
| Detect | 25 | You can tell a person is there. |
| Observe | 62 | You can see what they're doing and what they're wearing. |
| Recognise | 125 | Someone who knows the person can say who it is. |
| Identify | 250 | Enough detail to identify a stranger beyond reasonable doubt. |
The free version handles image and PDF plans. Pro adds the parts that save time on every project:
Early members get a founding price and a say in what gets built first.
Yes. The free version is open now with no card and no account needed: choose "Open the planner" and you go straight in. A paid Pro version with CAD import and client reports is coming; the free version stays.
No. Plans are opened and processed in your browser, on your device. Your project is saved as a file on your computer when you choose to save it.
PDF, PNG and JPG floor plans in the free version. CAD drawings (DXF) open with FOV Pro. Using DWG? Save it as DXF from your CAD software.
EN 62676-4 sets 250 px/m for identification and 125 px/m for recognition. FOV shows where each camera reaches those levels on your plan, so you can see how far out a camera stays useful.
40 models from 14 manufacturers, including Axis, Hikvision, Hanwha Vision, Avigilon, Bosch and Dahua, using each model's published field of view. Data is marked unverified until it has been checked against the manufacturer's datasheet, so check critical figures before you commit.
It opens on a phone, but placing cameras and drawing walls is much easier on a laptop or desktop with a mouse.
Free, no card, no sign-up. Your plans never leave your device.
Also from Plot-LV: Flame, fire alarm layouts against BS 5839-1 (not on sale yet).