Skip to main content
DevBench
Back to HealthAll tools
💧

Water Intake

HealthOffline-ready

Water Intake Calculator estimates your recommended daily fluid intake based on body weight (35 ml/kg) and adds extra for exercise duration. Results shown in litres and equivalent 250 ml glasses. Useful as a daily hydration reference — actual needs vary with climate, health, and diet. Runs entirely in your browser.

Related: Calorie Calculator (TDEE)BMIBMR

Your files and inputs stay in your browser — nothing is uploaded or stored.

Your current body weight

Average daily exercise time

Your typical environment

Daily water

2.8 L

2800 ml

8 oz glasses

11.7

Standard glasses per day

Basis

35 ml / kg

+exercise & climate adjustments

Daily water intake calculator

General guidelines recommend 35 ml of water per kg of body weight per day, adjusted for climate and physical activity. Exercise adds approximately 500–1000 ml per hour of moderate activity. This calculator gives a personalised baseline — individual needs vary.