Daily Water Intake Calculator
Calculate your hydration goal based on weight, activity, and climate
Calculator
Your details
Between 30 and 200 kg
Your daily water intake
2.7liters per day
5x 500 ml bottles
Hydration goal: 5 bottles today. You've got this! ✨
Why hydration matters
Staying hydrated helps your body regulate temperature, support digestion, and keep your mind sharp. This calculator uses your weight and daily factors to estimate how much water you need. It's a guideline — listen to your body and adjust if you're very active or in hot weather.
Frequently asked questions
- How much water should I drink per day?
- A common guideline is about 35 ml per kilogram of body weight, plus extra for activity, hot weather, pregnancy, or breastfeeding. Use the calculator above for a personalized estimate.
- Does the calculator work for kg and pounds?
- Yes. You can enter your weight in either kilograms (kg) or pounds (lb) using the toggle next to the weight input.
- Why do I need more water when it's hot or I'm active?
- You lose more fluid through sweat in hot weather and during exercise. The calculator adds extra milliliters for "Hot" climate and for Moderate or Active activity levels to account for this.