Surveillance Tools
Free, no-signup calculators for CCTV planners, installers and resellers. Use them to size storage and PoE budgets before you quote a job or buy hardware.
NVR Storage Calculator
Estimate how many days your footage retains, or how much disk (TB) you need for a target window — from channel count, resolution, codec and recording mode.
Open calculator →PoE Power Budget Calculator
Add up camera wattage across a system and see the total PoE load plus the switch port count and budget you need — so you never underspec a PoE switch again.
Open calculator →Planning references
These tools assume open standards. Our gear follows them, which is why it interoperates across brands:
- ONVIF — the open forum standard for IP-based physical security products (profile conformance lets cameras talk to any ONVIF NVR).
- Power over Ethernet (IEEE 802.3af/at/bt) — how one cable carries both data and power, and what the wattage classes mean.
- IP camera —network camera basics, resolution and codec background used in the storage estimate.
- Network video recorder (NVR) — recording, storage and retention concepts behind the storage calculator.