Daily water intake
Body weight, exercise and climate -> a daily fluid target, split between drinks and food.
Daily Water Intake Calculator
A starting target from body weight, activity and climate — including the water you get from food, which most guidance leaves out.
Total daily water
Everything you take in over a day, including the water already in your food
92 fl oz
Updates as you type — nothing is sent anywhere.
General guidance, not medical advice. Fluid needs vary widely between people, and the coefficients behind this — roughly 30 to 40 ml per kilogram, and 20 to 30 percent of intake coming from food — are population averages with a real spread. Kidney and heart conditions, pregnancy, breastfeeding, and some medications all change the target substantially, and drinking far more than you need carries its own risks. Ask a healthcare professional about your own requirement.