Water Intake Calculator
Estimate daily water intake from body weight and activity.
Ounces
102 fl oz
Liters
3.02 L
Cups
12.8 cups
Guidance
General hydration estimate; adjust for climate, health, and activity intensity.
Formula
Ounces = body weight x 0.5 + activity adjustment.
Assumptions
- Uses a simple body-weight plus activity estimate.
- Actual hydration needs depend on climate, health, diet, medication, and activity intensity.
The water intake calculator gives a simple hydration estimate based on weight and added activity time.
How to Use
The water intake calculator gives a simple hydration estimate based on weight and added activity time. Enter the Weight and Activity minutes values and review the Ounces, Liters, Cups, and Guidance outputs after you calculate.
- Open the calculator : Start with Water Intake Calculator.
- Enter values : Fill in the required inputs and any optional settings.
- Review the result : Read the output and use the about page for more detail if needed.
Common Questions
What does the Water Intake Calculator estimate?
It estimates how much water you may want to drink in a day.
How accurate is the result?
Hydration needs vary with heat, exercise, body size, and health factors, so use it as a planning estimate.