Water Intake Calculator
Daily water target from weight, exercise and climate. Calculate how much water you should drink daily based on your weight, exercise minutes and climate. Get your target in litres and glasses. Free hydration calculator.
About the Water Intake Calculator
How much water you need is personal: body mass sets the baseline, sweating replaces losses, and hot climates raise the bill. This calculator combines the three — weight, daily exercise minutes and climate — to estimate your daily water target, shown in litres, millilitres and a count of 250 ml glasses. Food contributes roughly 20% of fluid intake, so the target is total intake guidance, not a strict drinking quota.
How to use the Water Intake Calculator
- Enter your weight.
- Enter minutes of daily exercise.
- Pick the climate that matches your environment.
- Read your daily target in litres and glasses.
Key features
- Baseline scaled to body weight
- Adjusts for exercise duration
- Adjusts for hot or very hot climates
- Result in litres, ml and glasses per day
Does the "8 glasses a day" rule hold up?
Can I drink too much water?
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