Calculate Water Intake in Ounces by Weight and Exercise

This calculator helps you estimate your daily water intake in fluid ounces (fl oz) based on your body weight and the duration of your daily exercise. Using your weight provides a baseline for hydration, while factoring in exercise accounts for fluid lost through physical activity.

Calculation Formula

The recommended daily water intake is calculated using the following formula:

Total Intake (fl oz) = (Weight in lbs / 2.2) + (Exercise in minutes / 30) * 12

Where:

• (Weight in lbs / 2.2): Establishes your baseline water requirement.
• (Exercise in minutes / 30) * 12: Adds 12 oz of water for every 30 minutes of exercise performed.

Example

Let's calculate the water intake for a person who weighs 170 lbs and exercises for 30 minutes a day.

• Baseline intake based on weight: 170 / 2.2 = 77.27 oz
• Additional intake from exercise: (30 / 30) * 12 = 12 oz
• Total recommended intake: 77.27 + 12 = 89.27 oz, which is rounded to 89 fl oz.