Daily Water Intake Calculator
Get a hydration target based on body weight, daily activity, and climate.
Daily target
3024 ml
In liters
3.02 L
Approx. cups (250 ml)
12.1
Hydration needs vary by health, diet, altitude, and sweat rate. Use this as a practical estimate.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
How is daily water intake estimated?
This tool starts with a weight-based baseline and adjusts for activity time and climate.
Does exercise increase my water target?
Yes. More activity increases fluid needs due to sweat loss and higher metabolic demand.
Is this a medical recommendation?
No. It is a general hydration estimate and should not replace professional medical guidance.
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