Water Intake Calculator

Proper hydration supports energy, digestion, skin health, and cognitive function. Our free water intake calculator estimates your ideal daily fluid intake using your body weight, physical activity level, and local climate conditions.

Share:Pin It Post Share

Weight

Activity Level

Climate

Stay Hydrated Effortlessly

From smart water bottles that track your intake to electrolyte supplements for active days, these products help you hit your hydration goals.

Product recommendations coming soon. We are carefully selecting items we genuinely believe will support your wellness journey.

Some links may be affiliate links. If you make a purchase, we may earn a small commission at no extra cost to you.

Frequently Asked Questions

How much water should I drink per day?

A common baseline is approximately 33ml per kilogram of body weight. For a 70 kg person, that is about 2.3 litres. This increases with exercise, hot weather, and other factors.

Does coffee count towards daily water intake?

Yes, moderate coffee and tea consumption contributes to your daily fluid intake. While caffeine has a mild diuretic effect, the net hydration from these beverages is still positive.

What are signs of dehydration?

Common signs include dark yellow urine, fatigue, headache, dry mouth, dizziness, and reduced concentration. Pale straw-coloured urine generally indicates adequate hydration.

Should I drink more water when exercising?

Yes. The American College of Sports Medicine recommends an additional 350-700ml of water per hour of exercise, depending on intensity and sweat rate.

Can you drink too much water?

Yes, excessive water intake (hyponatraemia) can dangerously dilute blood sodium levels. Stick to recommended amounts and drink when thirsty rather than forcing excessive intake.

More Nutrition Tools

View all →

🔥

Calorie Calculator

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation. Get calorie targets for weight loss, maintenance, and gain.

⏱️

Fasting Tracker

Track your intermittent fasting windows with a visual countdown timer. Supports 16:8, 18:6, 20:4, and custom fasting schedules.

📊

Macro Calculator

Calculate your daily macronutrient targets (protein, carbs, fat) based on your TDEE and fitness goals. Supports weight loss, maintenance, and muscle gain presets.

🥚

Protein Calculator

Calculate how much protein you need per day based on your weight, activity level, and fitness goals. Get gram-level targets for muscle building, weight loss, or maintenance.

Related Tools

🔥

Calorie Calculator

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation. Get calorie targets for weight loss, maintenance, and gain.

📊

Macro Calculator

Calculate your daily macronutrient targets (protein, carbs, fat) based on your TDEE and fitness goals. Supports weight loss, maintenance, and muscle gain presets.

💓

Recovery Tracker

Track your daily recovery score based on sleep quality, soreness, energy, mood, and heart rate. Optimise your training by knowing when to push hard and when to rest.

🚶

Walking Calorie Calculator

Calculate how many calories you burn walking based on distance, duration, speed, weight, and terrain. Covers flat walking, incline, and hiking.

Daily Water Intake Guide: How Much Water You Really Need

Hydration Calculator: How Much Water Do You Need Daily?

Water Intake Tracker: A Simple Daily Log