💧 Water Intake Calculator
Calculate how much water you should drink each day.
What is a Water Intake Calculator?
Determine your optimal daily water intake based on your body weight and activity level.
Base = 0.033L per kg of Body Weight📝 In-Depth Guide: Mastering Water Intake Calculator
Hydration is the simplest way to improve your health. Every system in your body, from your kidneys to your brain, relies on adequate water to function.
The Signs of Dehydration
Thirst is actually a late sign of dehydration. Other early indicators include daytime fatigue, headaches, and dark-colored urine. By hitting your calculated goal, you can improve your energy levels and skin health.
Example
📌 Example Calculation
70kg person with Moderate activity ≈ 2.8 Liters/day
Frequently Asked Questions
The calculator applies the formula and assumptions explained on this page to the values you enter. Calculate how much water you should drink each day. Use our free water intake calculator online — instant results, no sign-up.
The arithmetic follows the displayed method, but accuracy depends on your inputs, units, assumptions, and rounding. Confirm important decisions with an authoritative source or qualified professional.
No. The calculation runs in your browser and does not require an account. Avoid sharing a prefilled result link if its inputs are sensitive.