If you are asking for PCB trace thickness. 1 ounce/square foot correspond to 1.4mil (milli inch).
1 US fluid ounce = 29.5735295625 millilitres. To convert a value in US fluid ounces to millilitres, multiply by 29.5735295625.
113.65 ml in 4 oz.
11.7 US fluid ounces = 346.010296 ml
177.44
3,400.96 millilitres