Daily Water Intake Calculator
How much to drink for your weight, climate and training.
Enter your values
ⓘ Live results
Results
- Daily water target
- 106 oz
- In litres
- 3.13 L
- Standard 16 oz bottles
- 6.6
- 8 oz glasses
- 13.3
Quick answer
A common baseline is half your body weight in ounces of water per day, plus 12–16 oz for every 30 minutes of exercise.
How to use the Daily Water Intake Calculator
- 1Enter your body weight.
- 2Add daily exercise minutes.
- 3Pick your climate to adjust the target.
Worked example
Using the values the calculator loads with:
Inputs
- Body weight170 lb
- Exercise45 minutes/day
- ClimateTemperate
Results
- Daily water target106 oz
- In litres3.13 L
- Standard 16 oz bottles6.6
- 8 oz glasses13.3
Frequently asked questions
Do coffee and tea count?
Yes. Caffeinated drinks are mildly diuretic but still contribute net fluid to your daily total.
How do I know I'm hydrated?
Pale straw-coloured urine and infrequent thirst are the simplest day-to-day indicators.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.