Daily Water Intake Calculator
Get a personalized daily water target based on weight, activity, and climate.
Per day (oz)
101 oz
Per day (L)
2.99 L
Cups
12.6
Sip every hour
6 oz
About this estimate
Based on the 0.5–1 oz per pound rule, plus adjustments for activity and climate. This counts total fluids, including water from food. Adjust up if you’re sweating heavily, sick, or pregnant.
About this tool
Enter your weight, activity level, and how hot your climate is. Get a per-day ounce and liter target, plus a per-hour reminder schedule. Top r/fitness and r/loseit question.
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