Hydration Calculator
Enter your weight in kilograms to calculate how much water you should drink daily.
Use this free tool to find out exactly how much water you should drink each day based on your weight. Stay healthy, boost your energy, and take care of your body with proper hydration.
Why Hydration Is Important in the UK Climate
- Heated indoor air dries you out without you noticing.
- Cold temperatures reduce your thirst but not your need for water.
- Drinking water supports focus, digestion, and healthy skin.
How the Calculator Works
Simply enter your weight in kilograms above. The calculator uses a general formula of 30ml of water per 1kg of body weight to estimate how much water you need every day.
Example:
If you weigh 70 kg, you should drink approximately 2,100 ml (2.1 litres) of water daily.
Daily Water Intake Tips
- Drink a glass of water first thing in the morning.
- Carry a reusable water bottle throughout the day.
- Flavour your water with lemon or mint to make it more appealing.
Frequently Asked Questions (FAQ)
💬 How much water should I drink daily in the UK?
On average, adults should consume between 1.5 and 2.5 litres daily depending on weight, activity level, and climate. Our calculator tailors this to your body weight.
💬 Can I drink too much water?
Yes, excessive water consumption can lead to overhydration. Stick to calculated needs and listen to your body.
💬 What if I weigh in pounds (lbs)?
Convert pounds to kilograms by dividing by 2.2. For example, 154 lbs ÷ 2.2 = 70 kg.
💬 Does tea, coffee, or juice count?
Partially. Caffeine is a mild diuretic, so plain water remains the best choice for hydration.
