Can I use my 60w usb charger from my pc to charge iPhone 16

You can! Your iPhone will only draw the power it needs. As long as it is indeed a genuine Apple part there should be no problem.

Reference: Charge and connect with the USB-C connector on your iPhone - Apple Support (UG)

"If you have a 20W USB-C power adapter or higher-wattage USB-C power adapter — like the one that came with your Mac laptop — you can use it with your iPhone for faster charging."

It would likely be okay BUT I would be hesitant to use a charger designed for a different platform. The wattage is not the problem. The problem would be voltage.

I now see in your question that you said it's a windows charger. If that's the case, i'd not recommend charging your phone with that.

Cheers!

When you said “charger from my pc” I thought you meant a Windows pc. We don't usually refer to Macs as a pc. If your pc is indeed a Mac then no problems at all, it will work just fine.