Security Camera Calculators
Use these security camera calculators to plan camera coverage, field of view, recording storage, retention days, bitrate assumptions, upload speed, and supporting network or backup power equipment before buying an NVR, DVR, surveillance drive, PoE switch, UPS, or camera kit.
Security camera calculators
Security Camera Coverage Calculator
Estimate camera field of view, coverage width, pixels per foot, pixels per meter, and whether a lens can meet a target detail goal.
Security Camera Storage Calculator
Estimate NVR, DVR, or microSD storage from camera count, bitrate, recording hours, retention days, installed capacity, and headroom.
Security Camera Bandwidth Calculator
Estimate IP camera bandwidth, NVR network load, remote viewing upload speed, and headroom from camera count and stream bitrate.
NVR UPS Runtime Calculator
Estimate how long a UPS can power an NVR, PoE cameras, PoE switch, router, and security camera system during an outage.
Security camera answer library
A useful surveillance estimate starts with the recorded bitrate and retention target, not only the camera resolution label.
Coverage, storage, bandwidth, and backup runtime
Start here when choosing camera lenses, an NVR, DVR, surveillance drive, PoE switch, or UPS backup plan.
- Security Camera Coverage CalculatorEstimate camera field of view, coverage width, PPF, PPM, and whether a lens can meet a detect, observe, recognize, identify, or plate detail goal.
- Security Camera Storage CalculatorEstimate NVR or DVR storage from camera count, bitrate, recording hours, retention days, and headroom.
- Security Camera Bandwidth CalculatorEstimate local NVR bandwidth, remote viewing upload speed, and network headroom from camera count and bitrate.
- NVR UPS Runtime CalculatorEstimate how long a UPS can keep the NVR, PoE cameras, switch, router, and security camera system running during an outage.
- PoE Switch Power Budget CalculatorCheck whether a PoE switch can power the cameras, access points, and other PoE devices in the installation.
- Calculation methodologySee how DeviceCalc documents formulas, assumptions, limits, and practical estimates.
Related setup calculators
Camera systems often overlap with home network planning, backup power, and physical placement.
Choose a security camera calculator by setup question
Camera systems involve several separate decisions: what the lens can actually see, whether there is enough detail at the target distance, how much video storage is needed, whether the PoE switch can power each device, and whether backup power is needed for the router, ONT, NVR, or switch.
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The Security Camera Coverage Calculator estimates field of view, coverage width, pixels per foot, and whether a lens can meet a detail target at the chosen distance. The Security Camera Storage Calculator estimates NVR, DVR, or microSD capacity from bitrate, camera count, recording schedule, retention days, and headroom. The Security Camera Bandwidth Calculator checks local recording bandwidth, remote upload speed, and network headroom. The NVR UPS Runtime Calculator estimates how long the camera system can keep recording during an outage. Use the PoE Switch Power Budget Calculator when the question is whether the switch can power the cameras.
Security Camera Coverage Calculator
Estimate camera field of view, coverage width, pixels per foot, pixels per meter, and whether a lens can meet a target detail goal.
Security Camera Storage Calculator
Estimate NVR, DVR, or microSD storage from camera count, bitrate, recording hours, retention days, installed capacity, and headroom.
Security Camera Bandwidth Calculator
Estimate IP camera bandwidth, NVR network load, remote viewing upload speed, and headroom from camera count and stream bitrate.
NVR UPS Runtime Calculator
Estimate how long a UPS can power an NVR, PoE cameras, PoE switch, router, and security camera system during an outage.
Plan the complete camera path
A camera can meet its lens target and still fail the project if storage, network, power, or outage planning is undersized.
- Mark the required identification or observation distance.
- Record camera bitrate, schedule, retention days, and storage reserve.
- Include PoE switch, NVR, router, and ONT power in backup estimates.