Health
Water Intake Calculator
Daily hydration target by weight & activity.
Result
2.81 L
Recommended daily water intake
Cups (240 ml)
11.7
Fluid oz
95.0
Download results
Quick summary
Estimate your daily water intake based on body weight and minutes of physical activity.
How to calculate water intake manually
- Enter your input values into the Water Intake calculator above.
- Review the formula and assumptions in the Expert Guide section.
- Adjust the inputs to model different scenarios in real time.
- Save or export the results once they match your scenario.
Estimate your daily water intake based on body weight and minutes of physical activity.
How it works
Water (ml) ≈ 35 · weight(kg) + 12 · activity(min).
Example
70 kg, 30 min activity → ≈ 2.81 L/day.
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