Use our Daily Water Intake Calculator 2026 to estimate how much water you should drink daily based on your weight and activity level. Fast & free tool.
Daily Water Intake Calculator 2026
The Daily Water Intake Calculator 2026 helps you determine how much water your body needs each day. Staying hydrated is essential for maintaining energy levels, improving digestion, and supporting overall health. This calculator gives you an estimate based on your weight and activity level.
Why Water Intake Is Important
Water plays a crucial role in regulating body temperature, transporting nutrients, and removing waste from the body. Even mild dehydration can cause fatigue, headaches, and reduced concentration. Proper hydration improves skin health and supports kidney function.
How This Calculator Works
The calculator multiplies your body weight by a hydration factor and adjusts the result based on your activity level. People who exercise regularly or work in hot environments need more water compared to those with a sedentary lifestyle.
Recommended Water Intake Formula
Base Water Intake = Weight × 35 ml
Adjusted Intake = Base Intake × Activity Level
Who Should Use This Tool?
Students, office workers, athletes, and anyone focused on improving their health can use this calculator. It is especially helpful for people trying to maintain fitness or follow a healthy lifestyle plan in 2026.
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Frequently Asked Questions
Is this calculation accurate?
This tool provides an estimate. Individual hydration needs may vary.
Do I need more water during summer?
Yes, hot weather increases fluid loss, so intake should be higher.
Can I replace water with juice?
Plain water is the best source of hydration.