Which is bigger? 40 milliliters or 6 ounces

Sorry I'm comparing products online and would like to know which is bigger. I tried converting them but I'm awful at conversions!! Thanks everyone :)

Technically milliliters and ounces can't be compared as one is volume and the other is weight. However a lot of liquid products are listed as fluid ounces which IS a volume measurement.

6 fl ounces is about 180 milliliters so 6 fl ounces is more than 4 times bigger than 40 ml.