❤️ Health & Lifestyle
Water Intake Calculator
Find out exactly how much water you need to drink daily based on your body and lifestyle.
How the Water Intake Calculator works
The base calculation uses 35 ml per kg of body weight per day — a commonly recommended guideline. This is then adjusted for activity level (exercise increases sweat loss) and climate (higher temperatures increase fluid needs). A gender adjustment is also applied: men typically require slightly more water than women due to higher average muscle mass. Results are shown in litres, glasses (250 ml), and millilitres.
Frequently Asked Questions
People also ask — answers optimized for search engines and voice queries.
How much water should I drink per day?
The general recommendation is about 35 ml per kg of body weight. Activity level and climate increase this. The Water Intake Calculator personalises the recommendation based on your specific inputs.
Does coffee count towards daily water intake?
Mild caffeinated beverages like tea and coffee do contribute to fluid intake, but water is the best choice. Alcohol does not count — it is a diuretic and increases fluid loss.
How do I know if I am drinking enough water?
A simple indicator is urine colour. Pale yellow indicates good hydration. Dark yellow or amber means you should drink more. Clear/colourless urine may indicate over-hydration.
Should I drink more water when exercising?
Yes. During exercise, aim to drink 150–250 ml every 15–20 minutes. For sessions longer than 60 minutes, consider an electrolyte drink to replace sodium lost through sweat.
Is this water intake calculator free?
Yes, the Water Intake Calculator on Potential Daily is completely free with no sign-up required.