Water Intake Calculator
A simple daily hydration estimate based on your weight and activity level.
Estimated daily water
87 oz
≈ 11 cups · 2.6 L
Disclaimer: Hydration needs vary by climate, health conditions, pregnancy, and medications. Talk to a healthcare professional for personalized advice.
How to use this tool
- •Enter your weight and choose lb or kg.
- •Select your typical activity level.
- •Use the daily estimate as a friendly target.
- •Adjust for hot weather, exercise, or illness.
What this tool can help with
- •Setting a simple daily water goal.
- •Understanding that activity raises your needs.
- •Building a steady hydration habit.
What this tool cannot do
- •Diagnose dehydration or any medical condition.
- •Account for medications or specific health needs.
- •Replace personalized advice from a healthcare professional.
Beginner tips
- •Sip throughout the day instead of chugging once.
- •Keep a refillable bottle within easy reach.
- •Water-rich foods like cucumber, oranges, and soup count too.
Related tools
Educational note: This tool offers general, beginner-friendly information only. It is not medical advice, diagnosis, or treatment, and does not replace personalized guidance from a qualified healthcare professional.
Educational Sources
Guidance on this page is informed by general public health information from reputable organizations such as Harvard Health, Mayo Clinic, Cleveland Clinic, USDA, NIH, Academy of Nutrition and Dietetics. Always confirm any health decision with your own qualified healthcare professional.
Frequently Asked Questions
Does coffee or tea count?
Mostly yes. Most non-alcoholic fluids contribute to hydration, though plain water is ideal.
Can I drink too much water?
Yes — very rarely, excessive water can dilute electrolytes. Listen to your thirst and ask a professional if unsure.
Do fruits and vegetables count?
Water-rich foods like cucumber, watermelon, and oranges support hydration too.