Free Daily Water Intake Calculator
Enter your weight, exercise time and weather.
…
How to do it
- 1Choose your settings
Fill in the details or pick the options you need.
- 2See the result
The preview updates right away as you change things.
- 3Download or save it
Save the result to your device. Nothing is sent to or stored on a server.
About this tool
Get a simple estimate of how much water you need each day based on your weight, how long you exercise and whether the weather is hot. The result is shown in litres, glasses and ounces. Needs differ with health, so treat it as a guide.
Frequently asked questions
Does tea and food count?
Yes. Many drinks and foods add to your water intake.
Is this medical advice?
No. If you have a health condition, ask your doctor how much to drink.
More tools you may need
Scientific CalculatorA free online scientific calculator with sin, cos, log, powers, roots and brackets.Typing Speed TestTest your typing speed in words per minute with accuracy.Webcam TestCheck that your camera works and see its resolution.Pomodoro TimerWork in 25-minute focus sessions with short and long breaks.Countdown Timer to a DateSee the days, hours, minutes and seconds until a date.Online RulerAn on-screen ruler in centimetres and inches, which you can calibrate with a bank card.