Daily Water Intake Calculator
How much to drink for your weight, climate and training.
Reviewed by James Whitfield · How we check our maths
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.
Worked example
Worked example
Using the values the calculator loads with.
Inputs
- Body weight170 lb
- Exercise45 minutes/day
- ClimateTemperate
Result
- Daily water target106 oz
- In litres3.13 L
- Standard 16 oz bottles6.6
- 8 oz glasses13.3
How to use the Daily Water Intake Calculator
- 1Enter your body weight.
- 2Add daily exercise minutes.
- 3Pick your climate to adjust the target.
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