USB PD Power Calculator
Figure out the right charger wattage, cable and port setup for your devices — in 30 seconds. No brand, no upsell, just the numbers.
1 Add the devices you charge together
How many ports does your charger have?
1 port
2 ports
3 ports
4+ ports
No devices added yet.
2 Calculate
Calculate my charger
How power splits across the ports
These are an illustrative fair-share estimate for a quality smart charger.
Real per-port caps vary by model — verify against your charger's spec sheet.
Estimates use typical device charging profiles and an illustrative fair-share power model.
Actual draw varies with battery level, workload and cable quality — verify against your charger's spec.Paiyi Power ·
Questions? Contact us · Shenzhen / Huizhou, China