Daily Water Goal

What Is a Water Intake Calculator?

This calculator builds a daily fluid target from your weight (ml/kg heuristic), adds volume for exercise and hot weather, and optional bumps for pregnancy or breastfeeding. Output includes litres, millilitres, US fluid ounces and 250 ml “glasses” for intuition.

Hydration supports energy, skin, kidneys and exercise performance. Needs vary — this is a planning aid, not a prescription for kidney or heart-fluid restrictions.

How to Use the Water Intake Calculator - Step by Step

1. 1

   Enter weight

   Use kg (convert from lbs if needed).

2. 2

   Add exercise & climate

   Rough minutes of moderate activity today; pick climate feel.

3. 3

   Optional flags

   Tick pregnancy or breastfeeding if applicable.

4. 4

   Calculate

   Read your approximate total fluid target.

Frequently Asked Questions - Water Intake Calculator

Does this count only plain water?

The target approximates total fluids from drinks plus typical moisture in food. Plain water is great but tea, milk and juicy foods contribute too.

Can I drink too much?

Rare but possible (hyponatremia) with extreme overdrinking. Follow medical advice if you have heart, kidney or electrolyte issues.

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