How accurate is this Water Intake Calculator?

Our calculator uses scientifically validated formulas and provides results based on peer-reviewed research. Results should be used as a general guide and not as medical advice.

Is this tool free to use?

Yes, this Water Intake Calculator is completely free to use. No registration or payment required.

Can I use this calculator on mobile?

Yes, our calculator is fully responsive and works on all devices including smartphones, tablets, and desktop computers.

Water Intake Calculator

Calculate how much water you should drink daily based on your lifestyle

Daily Water Intake Calculator

Calculate your optimal hydration needs based on your body and lifestyle

Body Weight

Activity Level

Sedentary

Little/no exercise

Light

1-3 days/week

Moderate

3-5 days/week

Very Active

6-7 days/week

Athlete

2x daily training

Climate Conditions

Temperate

Hot & Humid

Cold

High Altitude

Special Conditions (Optional)

0% of daily goal

-- L/day

-- ml

-- fl oz

-- cups

-- glasses

Suggested Hydration Schedule

Water-Rich Foods to Boost Hydration

Cucumber

96% water

Watermelon

92% water

Oranges

87% water

Strawberries

91% water

Lettuce

95% water

Tomatoes

94% water

Broccoli

89% water

Peaches

89% water

Hydration Tips

Drink a glass of water first thing in the morning
Keep a reusable bottle with you throughout the day
Set reminders on your phone to drink regularly
Drink water before, during, and after exercise
Flavor water with lemon, cucumber, or mint

Signs of Dehydration

Dark urine Headache Fatigue Poor focus Dry mouth Dizziness Muscle cramps

Water needs vary by individual. Increase intake during illness, hot weather, or intense exercise. About 20% of daily fluid intake typically comes from food. Consult a healthcare provider if you have kidney issues, heart conditions, or are taking medications that affect fluid balance.

Water Intake

Stay properly hydrated.