Daily Water Intake Calculator: How Much Water Should You Drink?

How Your Daily Target Is Calculated

A common baseline is roughly 30-35ml of water per kilogram of body weight, adjusted upward for exercise, hot climates, or high-sodium diets. Rather than doing this math manually, our calculator produces an instant, personalized target.

Hydration and Weight Loss

Drinking water before meals can reduce overall calorie intake by increasing fullness, and swapping sugary drinks for water removes hundreds of "invisible" calories a day - one of the easiest changes in any weight loss diet plan.

Signs You're Not Drinking Enough

• Dark yellow urine (pale straw color is the target)
• Persistent fatigue or headaches
• Dry mouth or unusually strong thirst
• Reduced workout performance

Practical Tips to Hit Your Target

• Keep a water bottle visible on your desk as a visual reminder.
• Drink a full glass first thing after waking up.
• Add a glass before each meal.
• Flavor water with lemon or cucumber if plain water feels boring.

FAQ

Can I drink too much water?

Yes, though it's rare - overhydration (hyponatremia) usually only happens with extreme intakes far beyond typical daily recommendations in a short window.

Do coffee and tea count toward water intake?

Yes, in moderation - despite the myth, caffeinated drinks still contribute net fluid, though water remains the best primary source.

Does more water help me lose weight directly?

Water itself has no calories, but proper hydration supports metabolism and appetite control, which indirectly supports weight loss.