TopToolAIDaily Water Intake Calculator
Estimate how much water you should drink per day based on your body weight and activity level, shown both in litres and as an easy-to-track number of glasses. Someone weighing 70kg with a moderately active routine typically lands around 2.4 litres a day, or roughly ten 240ml glasses — the common one-size 8-glasses-a-day rule is a rough average that ignores body weight entirely.
How to use Daily Water Intake Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
How to use Daily Water Intake Calculator
Step-by-step guide to the boxes below. Open it only if you need help.
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1
Weight (kg) Number
Your body weight in kilograms.
Example: 70
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2
Activity Choose one
Choose Low for mostly sitting, Moderate for regular walking or light exercise, High for hard workouts or a physical job.
Choose one: LowModerateHigh
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3
Press “Calculate”
Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.
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4
Read your result
You see your daily water target in litres and in glasses. Change any box and try again to compare different numbers.
Daily Water Intake Calculator FAQs
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