Daily Water Intake Calculator – Stay Hydrated
Find out exactly how much water you should drink per day based on your weight and activity level.
💧 Your Daily Water Goal
Why Hydration Matters
Proper hydration improves energy, skin health, digestion, and brain function. The standard "8 glasses a day" is a good start, but individual needs depend on weight, activity, and climate. Our calculator uses the formula: 30–40 ml per kg of body weight, adjusted for activity.
FAQs
Does coffee count as water?
Mostly, but caffeine has mild diuretic effects. It's best to drink mostly pure water.
Can I drink too much water?
Yes, overhydration is rare but possible. Stick to your calculated amount and listen to your thirst.