IPad Air 4 USB-C charging, can I use my existing Anker USB chargers with a USB to USB-C cable to charge the new Air 4?

We have 6 X ANKER multi port USB chargers we use in a couple of locations to charge our iPhones and IPadAir 1 iPads. Looking upgrade to the new iPad Air 4 which now use the USB-C for charging.

Can we use our existing Anker chargers by purchasing USB to USB-C Cables to charge the iPad Air 4?

Not concerned if it takes longer to charge.

Thanks in advance.