Hi @designbysue thanks for contacting us.
Cart Weight shows weight based on th unit chosen in your WooCommerce Products settings. If you choose oz as your weight unit – https://take.ms/r046c, then the weight will be shown in oz in the cart – https://take.ms/FL9xYQ.
Best regards
Karolina
As we haven’t got any replies, I’m marking this topic as resolved for now.
If you have any additional questions, let us know, we’ll be happy to help.
Best regards,
Tomek