Water Intake Calculator
Estimate how much water you should drink per day based on weight, activity and climate.
100% free No signup Private & offline-ready Works in your browser
About the Water Intake Calculator
A common guideline is about 33 ml of water per kg of body weight, plus extra for exercise and hot weather. Food and other drinks also count towards your intake. People with kidney or heart conditions should follow their doctor's advice.
Frequently asked questions
Is the Water Intake Calculator free?
Yes. The Water Intake Calculator on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.
Are my files or data uploaded to a server?
No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.
Does it work on mobile?
Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.