Healthy-Weight

Water Intake Calculator

Calculate your optimal daily water intake based on your weight, activity level, and climate. Essential for GLP-1 users.

Water Intake Calculator

Find your optimal daily hydration target.

Unit system
Daily water
106oz
In cups
13cups
Glasses (250ml)
13glasses

GLP-1 medications can increase dehydration risk — stay hydrated throughout the day.

NewSelf GLP-1 weight loss program

Why hydration matters for weight loss

Water plays a crucial role in metabolism, appetite regulation, and fat burning. Studies show that drinking water before meals can reduce calorie intake, and even mild dehydration can slow your metabolism. Staying properly hydrated also helps your body flush out waste products released during fat breakdown.

GLP-1 and dehydration risk

GLP-1 medications like semaglutide and tirzepatide slow stomach emptying and reduce appetite, which can lead to reduced fluid intake. Additionally, side effects like nausea and vomiting can increase dehydration risk. GLP-1 users should be especially mindful of their hydration and aim for at least 2-3 liters of water per day.

How to hit your daily water goal

  • Start your day with a large glass of water before breakfast.
  • Carry a reusable water bottle everywhere you go.
  • Set hourly reminders on your phone to drink water.
  • Add lemon, cucumber, or mint for flavor without calories.
  • Eat water-rich foods like watermelon, cucumber, and soups.