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Water Intake Calculator

Enter your weight and how long you exercise each day to get a daily water target in litres, 250 ml glasses and US fluid ounces.

Water Intake

How much water to drink per day

Water per day2.7 L
Glasses (250 ml)11
US fluid ounces90

Hoe het werkt

  • Baseline: about 33 ml per kg of body weight.
  • Add roughly 350 ml for every 30 minutes of exercise.
  • Hot weather, illness and breastfeeding increase needs.
  • Food and other drinks also count toward your fluid intake.

Worked example: 70 kg, 30 minutes of exercise

  1. 170 × 0.033 = 2.31 L.
  2. 2Exercise: + 0.35 L.
  3. 3Total ≈ 2.7 L.

≈ 2.7 litres — about 11 glasses

Daily water by body weight (no exercise)

WeightLitresGlasses
50 kg1.77
60 kg2.08
70 kg2.39
80 kg2.611
90 kg3.012

Veelgestelde vragen

Do I really need 8 glasses a day?

It is a rough rule. Needs depend on body size, activity and climate.

Does coffee count?

Yes, coffee and tea contribute to fluid intake in moderate amounts.

Can I drink too much water?

Yes, very large amounts in a short time can be dangerous. Spread intake through the day.

Gebruik het zonder advertenties

QuickCalc Pro is een eenmalige betaling van $ 4,99: nergens advertenties, en u kunt elke berekening opslaan en opnieuw openen op elk apparaat.

30 dagen geld-terug-garantie · Veilig afrekenen door Paddle

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