Daily water intake calculator
How much water your body needs based on weight, exercise and climate.
Daily water needed (liters)2.86
Milliliter equivalent2,860
Number of 250 ml glasses11.4
How to use it
- 1Enter your weight.
- 2Enter your daily exercise minutes.
- 3Select the climate and see the result.
Calculation formula
Daily water ≈ weight × 33 ml + exercise and climate needs
Worked examples
Sample calculation
A 70 kg person exercising 30 minutes in moderate weather needs about 2.9 liters of water.
Frequently asked questions
Do tea and coffee count too?
They do provide some of the body's fluid needs, but it's better if plain water is your main source.
Is this number the same for everyone?
No; illnesses, pregnancy, and medications can change the body's needs.