Water Intake Calculator
About you
kg
Light exercise (1-3 days/week)
Daily recommendation
Water per day
2.66 liters
Cups
11.2
500 ml bottles
5.3
This is a general estimate. Individual needs vary based on climate, health, and other factors.
About the Water Intake Calculator
Estimate how much water to drink each day from your body weight and how active you are. The result is given in liters, US cups and 500 ml bottles, as a general starting point rather than medical advice.
How to use it
- 1 Enter your Body weight in kilograms.
- 2 Pick your Daily activity level: Low, Moderate, High or Extreme.
- 3 Read Water per day in liters, with the same amount in cups and 500 ml bottles.
Frequently asked questions
Your weight in kilograms is multiplied by 0.033 liters, then an amount for activity is added: nothing for Low, 0.35 L for Moderate, 0.7 L for High and 1 L for Extreme. A 70 kg person with moderate activity gets about 2.66 liters.
Cups are US cups of about 237 ml, so one liter is about 4.2 cups. Bottles are 500 ml each, so one liter is two bottles.
No, weight is in kilograms only. Divide pounds by 2.205 to convert: 154 lb is about 70 kg.
No. It does not account for heat, illness, pregnancy or breastfeeding, all of which can raise your needs. Treat it as a starting point, and ask a doctor if you have a condition that affects how much you should drink.