How to usb tether a wifi network using iphone I have installed windows 10 on my Mac and the Wi---Fi is interfering with the Bluetooth so I've turned off the Wi-Fi on the Mac.

My iPhone is connected to the Wi-Fi so I want to usb-tether the Wi-Fi to my mac through my iPhone.

But I have noticed that usb-tether is using cellular connection instead of Wi-Fi which costs me money.

Is there a way to usb-tether a Wi-Fi network instead of cellular network?

Android happily do this. After all it is common sense to tether the gateway.
The personal hotspot feature uses the cellular data connection. It's currently not possible to share the Wi-Fi connection from your iPhone without jailbreaking.

If your iPhone is jailbroken you can use Bridge Mode with MyWi.