How to you change 1lb 4oz to a decimal?

You can divide ounces by 16 ounces per pound. Since the pound is a whole pound that can represent your whole number.

1 Pound = 1.0

4 Ounces = 4/16 or 1/4 or 0.25

1 Pound 4 Ounces would be 1.25 lbs.