USB-C charging guides & tools
Use the interactive tools for your exact setup, then open the short guides when you need the reasoning behind the result.
Decode the output label on a USB-C charger
Paste profiles such as 5V⎓3A, 20V⎓5A or PPS 3.3–11V⎓5A and calculate the real listed wattage, high-power cable requirement and PD/PPS/EPR clues.
Interactive toolOne charger for a laptop, phone and tablet
Choose several devices and build a minimum USB-C charger spec with total wattage, per-port power, PPS/EPR and cable guidance.
GuideWhat wattage USB-C charger do I need?
Choose a charger by device target, port rating and shared power — not by the biggest number on the box.
GuideCan a phone charger charge a laptop?
USB-C alone is not enough: check USB Power Delivery, available wattage and the laptop's charging input.
Guide60W vs 100W USB-C cable: can the cable slow charging?
How cable power ratings can become the bottleneck between a high-power charger and your device.
GuideWhy a 100W multi-port charger may not give your laptop 100W
Total charger wattage, per-port limits and power sharing explained with practical examples.
GuideUSB PD, PPS and EPR explained
The USB-C charging protocol terms that matter when matching a charger, cable and device.
GuideWhy can a laptop battery drain while plugged in?
If the charger delivers less than the system is consuming, the battery can make up the difference.
GuideIs a higher-watt USB-C charger safe?
Why a standards-compliant 140W or 240W charger can safely power lower-watt USB-C devices.
Compare45W vs 65W vs 90W vs 100W vs 140W
Choose a charger size and see the cable, port and protocol limits that still matter.