Nutrition
Water Intake Calculator
Estimate your daily water intake based on body weight, exercise duration and climate.
Quick answer
The Water Intake Calculator estimates daily hydration needs based on body weight, exercise time and climate. Water needs can change with heat, sweating, activity level and daily routine.
Learn more about this result
How Much Water Should You Drink Per Day?
Learn what affects daily water needs, including body weight, exercise time, sweating and climate.
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Enter your details to estimate your daily water intake.
Calculator guide
How to understand your water intake result
How to use this calculator
- 1Choose metric or imperial units.
- 2Enter your body weight.
- 3Enter your daily exercise duration in minutes.
- 4Select normal or hot climate depending on your environment.
- 5Click the calculate button to estimate your daily water intake.
What the result means
The water intake result gives a simple daily hydration estimate based on body weight, exercise duration and climate. It can be useful as a general hydration target, but individual needs can vary based on sweating, diet, health status and activity.
How this estimate works
This calculator starts with a body-weight based estimate, then adds extra water for exercise and hot climate conditions.
Helpful answers