Tag: How to calculate water intake

According to the National Academies of Sciences, a person's daily fluid intake is highly individualized based on factors like age, gender, and weight. For a person wondering, "How much water should I drink at 70 kg?", the baseline recommendation is approximately 2.1 to 2.45 liters per day, which is then adjusted for individual lifestyle factors.

According to health experts, a general guideline is to drink half an ounce to an ounce of water per pound of body weight. For this reason, a 100 lb person needs approximately 50 to 100 ounces of water daily, depending on various factors like activity level, climate, and overall health. This article breaks down the calculation and other influences to ensure you stay properly hydrated.

While the well-known '8x8 rule' recommends eight 8-ounce glasses of water, this isn't a one-size-fits-all solution, as individual needs vary based on weight, activity, and health status. To determine precisely **how many 20 oz bottles of water do I need to drink a day**, a more personalized calculation is necessary to ensure optimal hydration for your body.