Water Intake Calculator

Find how much water you should drink daily based on weight, activity, and climate.

How to Use the Water Intake Calculator

  1. Enter your weight.
  2. Select activity and climate.
  3. See daily water target in ml and oz.

Daily hydration estimate

Needs vary with health conditions and medications. This is a general guideline, not medical advice.

Frequently Asked Questions

How much water should I drink?
A common estimate is ~35 ml per kg of body weight, adjusted for activity and climate.
Do coffee and tea count?
They contribute to fluid intake, but plain water is still the best primary source.

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