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Daily Water Intake Calculator
Estimate how much water you should drink each day based on your body weight and activity.
How to use this tool
- 1Paste or type your input above.
- 2The result updates instantly.
- 3Copy the output with one click.
Frequently asked questions
How much water should I drink a day?+
A common guide is about 30β35 ml per kg of body weight, increasing with exercise and heat. This tool personalises that estimate.
Is this a substitute for medical advice?+
No. These calculators are for general information and education only. Consult a qualified healthcare professional for personal medical advice.
Is my data private?+
Yes. The tool runs entirely in your browser β nothing you paste or type is uploaded to a server.
Learn more
- Daily Water Intake Calculator: how it works
- What your water intake result means
- Healthy ranges and next steps