BUYING TOOL
USB-C Charger Wattage Calculator
Pick the largest device and how you charge. The calculator gives a practical wattage tier, port advice, and the cable check that prevents most bad charger buys.
Why the result is a range
USB-C Power Delivery devices negotiate power instead of forcing the charger's headline wattage into every device. USB-IF documents USB PD power levels up to 240W, but your real result still depends on the charger, device, cable, port allocation, heat, and battery state.
Read the 65W vs 100W buying guide