Water Intake Calculator — Calculate Your Daily Hydration Needs

Water Intake Calculator

Calculate your optimal daily water intake based on weight, activity level, climate, and health goals. Stay properly hydrated for better health and wellness.

Step 1: Personal Details

1.1x
Adjust for hot/humid climate (1.0 = normal, 1.5 = very hot)

Why Water Intake Matters

Proper hydration supports metabolism, brain function, joint health, and temperature regulation. Dehydration can cause fatigue, headaches, and reduced physical performance.

Step 2: Health Goals

500 ml

Adjusting for Goals

Different health goals require different hydration strategies. Weight loss often needs more water to suppress appetite, while athletic performance requires extra hydration for recovery.

Daily Water Intake Results

Summary
Activity Comparison
Daily Breakdown

Recommended Daily Water Intake

2.7 L
For 70 kg person with light activity
In Glasses (250ml)
11 glasses
In Bottles (500ml)
5.4 bottles
Hourly Intake
113 ml/hr
Daily Target
2,700 ml

Activity Level Comparison

Activity Level Multiplier Daily Intake Glasses (250ml)

Daily Intake Schedule

Water Intake Formula

Daily Water (ml) = Weight (kg) × Activity Multiplier × Climate Factor × Goal Multiplier

Base calculation: 30-35 ml per kg of body weight, adjusted for activity, climate, and health goals. This provides personalized hydration targets.

Need Personalized Hydration Advice?

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