Is 64 oz of water a day enough?
Ethan Hayes
Published Jan 04, 2026
According to MedlinePlus, there isn't a hard-and-fast recommendation for each adult's daily water consumption. A good ballpark figure is 64 ounces of water daily. As a comparison, the Dietary Reference Intake for adults is between 91 and 125 fluid ounces of water daily.
Is drinking 64 oz of water a day good?
You may have heard that you should drink eight 8-ounce (237 milliliters) glasses of water a day (totaling 64 ounces, or about 1.9 liters). That's the wrong answer. Despite the pervasiveness of this easily remembered rule, there is no scientific evidence to back it up, according to a 2002 review of studies.How many 64 oz should you drink a day?
Drink eight glasses of water at 8 ounces each. It's the eight-by-eight rule that guides us to drink 64 ounces of water each day.Is 64 oz of water enough to lose weight?
Regardless, a weight-loss program should include around 64 ounces of water — more if you've got a lot of weight to lose or your program involves a lot of working out. So grab a reusable, BPA-free water bottle, keep refilling it, and sip your way slim.How many oz of water should you drink a day?
“In general, you should try to drink between half an ounce and an ounce of water for each pound you weigh, every day.” For example, if you weigh 150 pounds, that would be 75 to 150 ounces of water a day.Is 64 oz of water a day enough?
How many glasses of water are in 64 oz?
Evidence for drinking 8 glasses of water each dayFor someone eating a diet of 2,000 calories per day, this adds up to 2,000 ml (roughly 64 ounces), or eight 8-ounce glasses.