MiRicordiCalculator
How much water should I drink a day?
Enter your weight and activity level to estimate your daily water intake in litres and glasses.
Enter your weight to see your result.
How the estimate works
The calculator uses a common guideline of about 30–35 ml of water per kilogram of body weight each day. Sport and physically demanding work can increase the estimate by around 10–20%.
Hot weather, pregnancy and breastfeeding can increase your needs further. Ask a healthcare professional for advice tailored to you.
Simple ways to drink more water
- Keep a bottle where you can see it, on your desk or in your bag.
- Drink a glass after waking up and one before each meal.
- Add lemon or mint if plain water feels unappealing.
- Drink regularly rather than waiting until you feel very thirsty.
- Spread your glasses throughout the day instead of drinking them all at once.