Water Intake Calculator – Daily Hydration Goal
Calculate your personalized daily water intake target based on weight and activity.
❤️ Health📐
Weight (lbs)
Exercise minutes per day
Climate
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Water Intake Calculator – Daily Hydration Goal | result |
Step-by-Step Examples
Example 1
160lb, 30min exercise, temperate
- 80+12+0 = 92oz (11.5 cups / 2.7L)
✓ 92oz / 2.7L
Example 2
200lb, 60min exercise, hot
- 100+24+16 = 140oz (17.5 cups / 4.1L)
✓ 140oz / 4.1L
Example 3
120lb, sedentary, cold
- 60+0-8 = 52oz (6.5 cups / 1.5L)
✓ 52oz / 1.5L
Real-World Applications
Everyone
Know your daily hydration target.
Athletes
Stay optimally hydrated.
Dietitians
Calculate client hydration needs.
Clinicians
Quick hydration recommendation.
Common Mistakes to Avoid
⚠️
Waiting until thirsty
Thirst signals mild dehydration. Drink regularly throughout day.
⚠️
Only counting water
Coffee, tea, and food contribute ~20% of daily hydration.
Frequently Asked Questions
8 glasses a day? ▾
Reasonable baseline for sedentary person at 64oz. Adjust for your weight and activity.
Signs of dehydration? ▾
Dark urine, headache, fatigue, dry mouth, dizziness. Light yellow = well hydrated.
Can I drink too much? ▾
Rare but possible (hyponatremia). Follow thirst, especially during intense exercise.