Health calculator
Free tool
Water Intake Calculator
Estimate daily water intake from body weight and activity with a simple hydration calculator.
Enter your numbers
Rule of thumb: body weight × 35 ml plus ~350 ml per 30 minutes of exercise
Result
Main result
—
Daily ml—
Approx. cups—
How to use it
- Enter the raw numbers from your report or campaign.
- Use the result to compare performance over time.
- Cross-check with related metrics before making decisions.