Estimate appropriate daily water intake goals based on body weight.
Calculator Parameters
Enter details and click calculate to view the results instantly.
Calculation Examples
Scenario Inputs
Output Result
weight : 75, exercise : 30
Recommended Target: ~ 2.6 Liters / day
About Water Intake Calculator
Daily Water Hydration Calculator. Estimate appropriate daily water intake goals based on body weight. Starlightopia provides this tool completely free and online, optimized for instant, accurate computations.
Technical Specifications
CategoryHealth
Target ValueRecommended Daily Water
Inputs Required (2)
Weight (kg) (number)
Daily Activity Time (Minutes) (number)
Frequently Asked Questions
How much water should I drink daily based on my weight?
A good baseline is to drink about 30 to 35 ml of water per kilogram of body weight each day.
How does exercise change my hydration needs?
It is helpful to add about 250 to 500 ml of water for every 30 minutes of intense, sweat-inducing exercise.
Do beverages like coffee and tea count toward daily hydration targets?
Yes, caffeinated drinks contribute to hydration, though pure water remains the best primary choice.
What are early symptoms of mild dehydration?
Early signs of dehydration include dark urine, a dry mouth, persistent headaches, and general fatigue.
Can drinking too much water be harmful?
Yes, consuming excessive amounts of water too quickly can lead to hyponatremia, a dangerous drop in blood sodium levels.