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Lay out ports, uplinks, and PoE watts before you buy a switch.
Turn a user-entered device CSV into a port count, per-port demand, total PoE budget, and headroom check.
Your plan
01 / INPUTSPortPlan PoE Budget
Calculated from user-entered inputs. Review assumptions and limitations.
Plan summary
02 / RESULTSPoE demand and headroom
Shared scale: 0 to 136.8 W. Values may overlap; bars are comparisons, not parts of a total. Review the details below.
| Device | PoE class | Per-port W | Quantity | Total W |
|---|---|---|---|---|
| Wi-Fi access point | AT | 25 | 3 | 75 |
| Security camera | AF | 8 | 4 | 32 |
| Doorbell | AF | 7 | 1 | 7 |
- PoE class is recorded from your device or switch documentation. The planner does not infer a class from a product name.
- The device list leaves 6 user ports open before any future additions.
- Budget remaining is 126.0 W before the chosen planning headroom.
Know the boundaries
- This is a port and power worksheet, not a coverage simulation, cable certification, or guaranteed device compatibility check.
- Per-port watts and PoE class must come from the actual device and switch documentation. Negotiated draw can differ from a nameplate maximum.
- It does not select a live product, verify VLANs, or estimate wireless capacity.
Examples are illustrative. Results depend on the assumptions and measurements you enter.
Method, not guesswork
A switch can have enough physical sockets but still lack the PoE watts needed by its connected devices. PortPlan keeps those constraints visible, while leaving exact class and draw claims to the documentation you enter.
Read the methodology and worked examplesFrom inputs to a useful decision
All guidesCount usable switch ports after uplinks
Keep physical switch ports and reserved uplinks separate when planning a PoE device list.
Read guidePractical guideBudget PoE watts with a visible headroom choice
Sum per-port demand, apply the entered reserve, and compare the recommendation with the switch budget.
Read guideCommon questions
How are available user ports calculated?
The engine subtracts entered uplink ports from total switch ports, then compares the remaining user ports with device quantities.
How does the PoE watt total work?
Each row’s per-port watts are multiplied by its quantity and summed across the CSV.
What does headroom change?
Headroom multiplies total PoE demand by one plus the entered percentage divided by 100 before comparison with the power budget.