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Hydration Calculators

Find your perfect daily water intake. Calculators for every body weight, activity level, health condition, age group, and weather condition.

How Much Water Should I Drink?General calculator Water Intake for 100 lbsDaily needs for 100 pounds Water Intake for 110 lbsDaily needs for 110 pounds Water Intake for 120 lbsDaily needs for 120 pounds Water Intake for 130 lbsDaily needs for 130 pounds Water Intake for 140 lbsDaily needs for 140 pounds Water Intake for 150 lbsDaily needs for 150 pounds Water Intake for 160 lbsDaily needs for 160 pounds Water Intake for 170 lbsDaily needs for 170 pounds Water Intake for 180 lbsDaily needs for 180 pounds Water Intake for 190 lbsDaily needs for 190 pounds Water Intake for 200 lbsDaily needs for 200 pounds Water Intake for 210 lbsDaily needs for 210 pounds Water Intake for 220 lbsDaily needs for 220 pounds Water Intake for 230 lbsDaily needs for 230 pounds Water Intake for 240 lbsDaily needs for 240 pounds Water Intake for 250 lbsDaily needs for 250 pounds Water Intake for RunningRunning increases fluid loss through sweat at 0.5-2 liters per hour. Proper hydr Water Intake for Gym WorkoutsWeight training and cardio sessions require extra hydration. You can lose 0.5-1 Water Intake for HikingOutdoor activity in varying temperatures demands careful hydration planning. Car Water Intake for CyclingCyclists can lose 1-2 liters per hour in hot conditions. Wind cooling masks swea Water Intake for SwimmingPool chlorine and exertion cause dehydration despite being in water. Swimmers sh Water Intake for YogaHot yoga especially increases fluid needs. Even regular yoga benefits from prope Water Intake for BasketballHigh-intensity court sport with significant sweat loss. Players need frequent wa Water Intake for Soccer90 minutes of running can cause 1-3 liters of sweat loss. Halftime hydration is Water Intake for TennisLong matches in the sun require aggressive hydration. Players should drink durin Water Intake for WeightliftingMuscle contractions require water. Even modest dehydration reduces strength outp Water Intake for CrossFitHigh intensity interval training creates massive fluid demands. Pre-workout and Water Intake for WalkingLower intensity than running but still requires hydration, especially in warm we Water Intake for DancingActive dancing can match gym-level exertion. Club environments are often hot, in Water Intake for Martial ArtsIntense training sessions with heavy sweating. Weight-class sports sometimes dan Water Intake for Rock ClimbingCombination of physical exertion and often dry indoor or high-altitude condition Water for PregnancyPregnant women need approximately 2.3 liters (10 cups) of water daily. Water sup Water for BreastfeedingNursing mothers need about 3.1 liters (13 cups) daily. Breast milk is approximat Water for Kidney StonesDrinking 2.5-3 liters of water daily can reduce kidney stone risk by up to 40%. Water for UTI PreventionAdequate hydration flushes bacteria from the urinary tract. Studies show drinkin Water for DiabetesPeople with diabetes often experience increased thirst. Proper hydration helps m Water for High Blood PressureDehydration can temporarily raise blood pressure. Consistent water intake suppor Water for Cold and FluFever, sweating, and mucus production all increase fluid needs. Staying hydrated Water for Hangover RecoveryAlcohol is a diuretic. For every alcoholic drink, your body eliminates extra wat Water for ConstipationWater is essential for healthy bowel movements. Insufficient hydration is one of Water for HeadachesDehydration headaches are common and preventable. Drinking water can relieve hea Water for Skin HealthWell-hydrated skin looks plumper and healthier. While water alone does not cure Water for Weight LossDrinking water before meals reduces calorie intake by 75-90 calories per meal. W Water for Taking MedicationMany medications require adequate hydration to work properly and prevent side ef Water for Surgery RecoveryPost-surgical healing requires extra hydration for tissue repair, medication pro Water for High AltitudeHigher elevation increases breathing rate and urine output, leading to faster de Water Intake for Toddlers (1-3 years)Toddlers need about 4 cups of fluids daily, including water and milk. Small bodi Water Intake for Children (4-8 years)Growing children need 5-7 cups of water daily. Active kids and hot weather incre Water Intake for Preteens (9-13 years)Approaching adult hydration needs. Boys typically need more than girls at this a Water Intake for Teenagers (14-18 years)Active growth and sports participation increase fluid needs. Many teens are chro Water Intake for Adults (19-50 years)The standard adult recommendation. Women need about 2.7L, men about 3.7L from al Water Intake for Seniors (65+ years)Aging reduces thirst sensation. Seniors are at higher risk of dehydration and sh Water Intake for Infants (0-12 months)Breast milk or formula provides all needed hydration. Plain water is not recomme Hydration in Hot WeatherHeat increases sweat rate dramatically. In temperatures above 90F (32C), you may Hydration in SummerSummer activities and higher temperatures mean you should drink 25-50% more wate Hydration in WinterCold weather reduces thirst sensation, but indoor heating and dry air still caus Hydration in Humid WeatherHigh humidity prevents sweat from evaporating, raising body temperature. You sti Hydration in Dry ClimateArid environments increase insensible water loss through skin and breathing. You Hydration in Rainy DaysCooler rainy weather reduces sweat but activity and indoor time still require no Hydration in Air TravelAirplane cabins have 10-20% humidity. A 5-hour flight can cause you to lose up t Hydration in Cold Weather ExerciseExercising in cold reduces thirst but increases respiratory water loss. Winter a

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