Health & Fitness
Water Intake Calculator
Estimate daily water intake from body weight, with extra for exercise.
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Formula
Base water is about 33 ml per kilogram of body weight, plus about 12 ml per minute of exercise.
How it works
Body weight sets the base amount, and exercise minutes add a small extra allowance. Hot weather, illness and heavy sweating all push real needs higher than this baseline.
FAQs
Does food count towards water?
Yes. Soups, fruit and vegetables all contribute fluid.
Is there a risk of drinking too much?
Very high intakes in a short time can be harmful; spread intake through the day.
Do I need exactly this amount?
No. Thirst, urine colour and conditions matter too.
General information only, not medical advice.