Network / Level 1
PoE budget calculator
Calculate device demand, design reserve and a practical minimum switch power budget.
FormulaPPSE ≥ (n × Pdevice) × (1 + H)
Assumptions
Each device is budgeted at the entered worst-case draw.
Limitations
Confirm PSE class, per-port limits, cable effects, LLDP negotiation, redundant supplies and ambient derating.