Water Intake Calculator
Split the IOM adult total-water reference into food and beverages using your assumed food share.
Formula
Total: male 3.7 L, female 2.7 L; beverages=total×(1−food share/100).
Total-water reference ≈ 2.7 · Beverage share ≈ 2.7×(1-(20)÷100)
How to use
- Select the adult reference group.
- Enter the assumed share supplied by food.
- Read total water and beverage share.
Examples
- Female reference 2.7 L, food share 20% → beverages 2.16 L.
Frequently asked questions
Is this all plain drinking water?
No. The 2004 IOM adequate intake includes food and every beverage; 20% is an editable illustration.
Is it a personal prescription?
No. For healthy adults who are not pregnant or breastfeeding; heat, exercise, illness and fluid restrictions need individual assessment.
Is this medical advice?
For reference only; it does not replace a clinician.
Sources
Updated: