Water Intake Calculator
Find your daily hydration target based on body weight and activity.
Your details
0240
How the water intake calculator works
Roughly 33 ml per kg of body weight, plus about 350 ml for every 30 minutes of exercise.
Formula
litres = weight (kg) × 0.033 + exercise allowance
Worked example
A 70 kg person exercising 30 minutes needs about 2.7 litres a day.
Frequently asked questions
Do coffee and tea count?
Yes. Most beverages and water-rich foods contribute to total daily fluid intake.
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