Native PoE Budget Calculator

Network planning tool

PoE Budget Calculator

Size switch power budgets for access points, cameras, phones and other powered devices before deployment.

LOCAL CALCULATION

Power plan

Enter the switch limits, then add each powered-device group that will share the budget.

Switch PoE budget (W)

PoE-capable ports

Design reserve (%)

Per-port capability 802.3af · 15.4 W 802.3at · 30 W 802.3bt Type 3 · 60 W 802.3bt Type 4 · 90 W

Powered devices

Use the maximum switch-side/PSE draw from the device or switch documentation when available.

Budget summary

Power and port capacity are checked independently so an apparently healthy wattage plan cannot hide a port-count problem.

IEEE PoE reference

802.3af · Type 115.4 W PSE
12.95 W PD
2 pairs

802.3at · Type 230 W PSE
25.5 W PD
2 pairs

802.3bt · Type 360 W PSE
51 W PD
4 pairs

802.3bt · Type 490 W PSE
71.3 W PD
4 pairs

Actual power available at the powered device can be lower because of cabling losses. This is a planning calculator; confirm final power requirements against the switch and powered-device datasheets.