Senior Hydration Calculator
Estimate a daily fluid target for an older adult — with the caveat that a doctor sets the real number.
Daily fluid target
Older adults dehydrate more easily because the sense of thirst fades with age. This tool gives a general daily fluid target based on age and weight, as a gentle reminder to offer drinks throughout the day.
Important: some heart and kidney conditions require limiting fluids, so always confirm the right amount with a doctor. This is a general estimate, not medical advice.
Common questions
How much water should an elderly person drink a day?
A common general target is about 7–8 cups, and national guidelines set total daily fluid at roughly 13 cups for men and 9 cups for women 51 and older (including fluid from food). Individual needs vary — confirm with a doctor, especially with heart or kidney conditions.
Do drinks other than water count?
Yes — milk, tea, juice, soups, and water-rich fruits and vegetables all count toward daily fluids, not just plain water.
What are the signs of dehydration in older adults?
Dark urine, dry mouth, fatigue, dizziness, headache, and new confusion. Confusion in particular is an easily missed early sign worth mentioning to a doctor.
Do it all in one place
These free tools each do one job. The Care Command Center keeps medications, appointments, costs, documents and an emergency sheet together in one calm dashboard.
Meet the Care Command Center