How much volume (mL) is in a sip?

Uh. This is an educated guess, but I’m going to say a small sip may be between 5 and 10 mL, and a bigger sip (a drink) would be more like 10–15 mL.

If you don’t find your answer here, you could always grab a measuring jug, fill it to a line, take a sip and find out.

I’m getting an average of 25 ml, measured as I would sip a cup of coffee (I sipped water, then weighed it on a digital balance).

It depends on how big your mouth is!!

And how thirsty you are!

I would say a sip is about 0.5 oz. 3 sips to a shot (1.5 oz). 24 sips to a can of soda (12 oz). 0.5 oz is equivalent to 15 ml.