⚡ PoE Budget Calculator
Plan your PoE switch capacity for IP cameras, access points and network devices. Visual gauge, per-port breakdown, 20+ switch presets and advanced safety controls.
CCTV Tool
20+ Switches
Visual Gauge
Switch Budget
150W
8-port PoE
Power Used
0W
0% of budget
Remaining
0W
headroom available
Budget utilisation
0%
Camera draw0W
Switch overhead0W
Safety buffer0W
Available now0W
Switch Configuration
8 ports
150W
8
10%
Power consumed by switch itself — deducted from PoE budget
20%
Recommended 20–30% headroom for cold-start inrush current spikes
1.0×
PoE cameras can draw 1.3–2× rated watts during startup. Default 1.0 = steady-state only
PoE Standard Reference
802.3af — PoE
15.4W
per port maximum
802.3at — PoE+
30W
per port maximum
802.3bt Type 3 — PoE++
60W
per port maximum
802.3bt Type 4 — PoE++
100W
per port maximum
Devices / Cameras — Enter Count per Type
Per-device wattage shown is typical steady-state draw. Use the Inrush Multiplier in Advanced Options to account for startup spikes.
Port Allocation — 0 / 0 ports used
In use — OK
In use — near limit
Over budget
Available
Planning Tips
Keep 20–30% headroom
Never plan for 100% PoE utilisation. Cold weather and startup spikes can draw 1.5–2× steady-state power.
PoE vs PoE+
Standard IP cameras need PoE (15.4W). PTZ cameras, heated domes and high-power APs need PoE+ (30W) or PoE++ (60W).
Per-port limits matter
Even if total budget allows it, each port has its own watt limit. A 30W PoE+ camera needs a PoE+ port — a PoE port will only deliver 15.4W.
Cable length loss
Power drops slightly over long cables. CAT5e/6 supports PoE up to 100m but voltage drop increases with distance — use CAT6 for runs over 70m.
Wattage figures are typical values — verify exact draw from your device datasheet before final installation planning.