Will I get charged for using Wi-Fi when my Sprint data plan is shut off?

If I turn off the data plan for my iPhone 5 (with the intention if turning it back on), will I get charged for using the Internet using Wi-Fi?

Why do you think you'd be charged for using Wi-Fi? You can buy a new laptop, bring it home and connect it to your Wi-Fi just as you would your Smartphone.

No, because Wi-Fi internet is begin received from different source which has no connection with your phone based data connectivity. So all the internet charger will be borne by the Wi-Fi owner.