Water Intake Calculator
Estimates daily water intake based on body weight.
Every calculation runs instantly in your browser, so your inputs are never sent to a server, and the tool is free with no sign-up. You can save the results as an Excel file with live formulas and reuse them later.
Inputs
- Weight (lb)
Example calculation
Daily water: 80 oz
| Cups (8 oz) | 10 |
|---|---|
| Liters | 2.37 |
Method & notes
General guideline of about half your body weight (lb) in ounces. Needs vary with activity and climate.
Tips
Change any input and the result recalculates in real time. After downloading the Excel file, you can reuse it by editing only the yellow input cells.
FAQ
How does the Water Intake Calculator work?
Estimates daily water intake based on body weight. General guideline of about half your body weight (lb) in ounces. Needs vary with activity and climate.
Can I save the results?
Yes. You can download the results for free as an Excel (.xlsx) file with live formulas that recalculate when you change the yellow input cells.
Is it free?
Yes — all Calcova calculators are free, and you can save results as an Excel file.