Units!

units. Indispensible tool. Very, very useful!

$ units
Currency exchange rates from www.timegenie.com on 2016-06-21
2926 units, 109 prefixes, 88 nonlinear units

You have: floz(2)
You want: ml
* 59.147059
/ 0.016907011

Yes, 2 fluid ounces is 60 milliliters.