Water Intake Calculator Enter a few details below to estimate how much water to drink each day. Age Sex Female Male Height Weight in pounds Activity level Sedentary: little or no exercise Light: exercise 1–3 times a week Moderate: exercise 3–5 times a week High: heavy exercise 6–7 times a week Extreme: very heavy exercise or physical job Pregnancy status Not pregnant or lactating Pregnant Lactating Calculate Water Intake Calculator