How much water should a 40 kg person drink

Some people say 8 glasses, others say 2 litres. How much water should you actually be drinking per day? Well, the truth is that it varies for each individual. One way to figure out how much water you should be drinking is to use this easy formula to know how much water to drink in a day in India. This water intake calculator can help you balance your meals too.

Read more: The Water Diet Is A Potentially 'Dangerous' Idea To Kick Start The Year With, Experts Warn

How much water should a 40 kg person drink

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Step 1: Check your weight in kilograms.

This formula calculates your water requirement based on your weight, simply because a 45 kilo person doesn't require the same amount of water as an 85 kilo person.  

Step 2: Divide the figure by 30.

Divide your weight by 30. The answer is the number of litres you should be drinking per day. So, if you weigh 60 kilos for example, you should drink 2 litres of water a day, whereas if you weigh 80 kilos, you should drink 2.6 litres (2 litres and 600 ml) of water per day.

Step 3: Add more water for physical activity.

If you exercise, you probably lose a lot of water through sweat. Add 0.35 litres (350 ml) to the figure for every half an hour that you exercise. So, if you exercise for an hour every day, add 0.7 litres (700 ml) of water to your daily requirement.

The number you are left with is the number of litres of water your body requires every day.

Step 4: Remember that food has water in it too.

Luckily, you don’t have to drink all of that water in liquid form, because your food has water in it too. In fact, approximately 20 - 25% of your water intake comes from the food you eat. This chart shows you how much water each of the common fruits and vegetables have. The column you need to look at is the water weight column, where 1 gram of water = 1 ml of water. So, if you eat an apple for example, it has 116 grams of water, so you can drink 116 ml (0.116 litre) less water that day. You probably won’t be able to sit and add up the amount of water in the fruits and vegetables you eat every day, but this is just to give you a general idea.

Read more: Struggling To Stay Hydrated? 5 Infused Water Recipes That'll Make Hydration Fun

How much water should a 40 kg person drink

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Follow 3 easy steps to see whether you are drinking enough water. The calculator will work out your hydration level based on the information you give about yourself and your daily drinking habits.

Tell us about you

Gender

Gender

Every day the kidneys process around 180 litres of blood and produce about 1-1.5 litres of urine.

Age

Age

As you get older, your sensation of thirst is reduced so you might not drink as much fluid as you need.

Weight

Weight

60% of our body is water. For a person weighing 70kg, that means 42 kg or 42 litres!

Height

Height

Your blood is composed of 83% of water.

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Physical Activity

Rare Occasionnal Weekly Daily

Physical Activity

"Maintaining good hydration ensures optimal cognitive performance.

Country

How much water should a 40 kg person drink

Country

Physical exertion, hot/humid weather, central heating and high altitude can all increase water loss.

Daily Liquid Intake

How many glasses do you consume?

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How many glasses do you consume?

Water is the only naturally occurring zero-calorie drink.

Results

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Hints and Tips

Your Hydration Status

“You already seem to be taking in enough liquid every day.”

“Careful – it looks like you need to drink more than you thought!”

Your Daily Calorie Intake from Liquids

Your daily calorie intake from liquids is within World Health Organisation guidelines.

Your liquid calory intake is (( (sugarIntake - sugarMax) * 4 )) Kcals above the recommended level.

Water in your body

Your Hydration Status

(( idealWaterIntake )) L

Your actual total intake:

(( actualWaterIntake )) L

The water you typically lose everyday:

(( lostWater )) L

The water you typically get from food everyday:

(( waterFromFood )) L

Water in your body

Information text when clicking the info button in the "Water in your body" card.

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How much water should I drink 40?

So how much fluid does the average, healthy adult living in a temperate climate need? The U.S. National Academies of Sciences, Engineering, and Medicine determined that an adequate daily fluid intake is: About 15.5 cups (3.7 liters) of fluids a day for men. About 11.5 cups (2.7 liters) of fluids a day for women.

How much water should I drink based on weight?

“In general, you should try to drink between half an ounce and an ounce of water for each pound you weigh, every day.” For example, if you weigh 150 pounds, that would be 75 to 150 ounces of water a day.

How do I calculate how much water I need for my weight?

Your weight is one variable that changes the amount of water you should be drinking. To help you establish a baseline, you can use the following rule-of-thumb equation described in U.S. News & World Report. In short, the equation tells you to take half your body weight, and drink that amount in ounces of water.

How can I drink 2 Litres of water a day?

Health experts commonly recommend eight 8-ounce glasses, which equals about 2 liters, or half a gallon a day. This is called the 8×8 rule and is very easy to remember. However, some experts believe that you need to sip on water constantly throughout the day, even when you're not thirsty.