Track water with the bottle you already carry.
Bottle volume converter for millilitres, US fluid ounces (29.57 mL) and imperial fluid ounces (28.41 mL), with full, three-quarter, half and quarter bottle amounts, plus a free printable refill log.
How can I track water using my own bottle?
Find its capacity, then log refills or fractions. In Dropkin you save it once and log it in one tap, with visible half and quarter buttons.
What's the difference between US and imperial fluid ounces?
A US fluid ounce is about 29.57 mL; an imperial fluid ounce is about 28.41 mL.