Water intake calculator
Get the daily reference value for water from food and drinks by body weight
Daily water from food and drinks
L
US fl oz
Reference values by group
Fixed daily values for each group, not a result for your weight.
| Group | From drinks | From food and drinks |
|---|---|---|
| 19 to 24 years | 1,470 ml | 2,360 ml |
| 25 to 50 years | 1,410 ml | 2,270 ml |
| 51 to 64 years | 1,230 ml | 1,970 ml |
| 65 years and over | 1,310 ml | 1,990 ml |
| Pregnancy | 1,470 ml | 2,360 ml |
| Breastfeeding | 1,710 ml | 2,710 ml |
How it works
The calculator multiplies body weight by 35 ml per kg for ages 19 to 50 and by 30 ml per kg from age 51. These are the D-A-CH reference values for water from food and drinks.
Water that the body makes itself is not included.
Sources. DGE, D-A-CH reference values for water · Unicode CLDR, unit conversions (lb, US fl oz).
Questions
How much water is that for 70 kg?
About 2.5 L a day from food and drinks for ages 19 to 50: 70 × 35 ml = 2,450 ml.
Does water from food count?
Yes. For ages 25 to 50, the reference gives 1,410 ml from drinks and 860 ml from food.
Do I need more water in hot weather?
Water needs can increase in heat and during exercise. The calculator does not add this extra water.
