Example: Weight: 170 lb · Exercise minutes per day: 30 min → Daily water target: 106 fl oz.
In cups: 13.2
In liters: 3.1 L
Frequently asked questions
How do I calculate water intake? Enter your numbers above and the result updates instantly. For example: Weight: 170 lb · Exercise minutes per day: 30 min → Daily water target: 106 fl oz.
Is this Water Intake Calculator free? Yes — completely free with no sign-up or paywall. It runs entirely in your browser and keeps working offline; the numbers you enter never leave your device.
How accurate is it? It uses the standard published formula for water intake. Results are estimates for planning — not financial, tax, medical, engineering, or legal advice.