Formula Calculation Question

Updated on February 22, 2010
J.H. asks from Greenvale, NY
7 answers

Ok, so I have 3 children, yet I cannot seem to remember how this goes... I just started my 9 month old on formula. When I pour 8 oz of water into the bottle, and then add 4 "scoops" the bottle now shows 10 oz. So, am I feeding her 8 oz or 10 oz? I am worried about this because I feel she isn't drinking enough. I weaned her rather quickly, and she eats a lot of food during the day, but only seems to be taking 12 oz (of water before formula added- would be 16 oz approx after formula added). Is this enough? She is small (only 16 lbs). Any help to clear this up would be appreciated. My mommy brain is still fried apparently!

To answer: Yes I am measuring the formula correctly, Yes I am taking the foam into consideration (but good suggestion!!). And I am still confused- so do I go by the number of ounces of water I start with, or the number of ounces of formula I am left with?
She drinks approximately 15-18 oz (based on water) or 19- 22 oz (based on formula).

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A.C.

answers from Cincinnati on

hi~
on the back of the formula can it should tell you (e.g. on the back of the can of Bright Beginings it states for a 2 ounce bottle use 2 counces of water and 1 scoop of powder). thus you would go buy the amount of water before adding the formula.

As far as how much she should drink here is some info from http://askdrsears.com/html/0/T000100.asp#T031009

HOW MUCH FORMULA DO I FEED MY BABY, AND HOW OFTEN?
As a general guide:
Between birth and six months of age your baby will need an average of 2 to 2.5 ounces of formula per pound per day. So, if your baby weighs ten pounds, she will need 20 to 25 ounces per day.
• Newborns may take only an ounce or two at each feeding
• One to two months: 3 to 4 ounces per feeding
• Two to six months: 4 to 6 ounces per feeding
• Six months to a year: as much as 8 ounces at a feeding

Small, more frequent feedings will work better than larger ones spaced farther apart. Your baby's tummy is about the size of his fist. Take a full bottle and place it next to your baby's fist and you'll see why tiny tummies often spit the milk back up when they're given too much at one time.

IS BABY GETTING TOO LITTLE OR TOO MUCH FORMULA?
Signs that your baby may be getting too little formula are:
• slower-than-normal weight gain
• diminished urine output
• a loose, wrinkly appearance to baby's skin
• persistent crying

hope that helps :)

1 mom found this helpful
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L.L.

answers from New York on

put the formula in first, then fill the bottle to the 8 oz mark. That's what I do.
Isn't it funny though--I was always so good in math but trying to calculate the formula for me in the beginning, being so tired and in the middle of the night, was rather frustrating! :)
Lynsey

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M.W.

answers from St. Cloud on

She will let you know if she is hungry. Never force her to drink more than she wants. Babies are built to know how much and to quit when they are full. Our daughter was always on the smaller side too. (About the same size as your daughter at that age!) But she is now almost 5 and in the 60% for height and weight.

I don't remember seeing a 2 oz difference in the bottle after adding formula but I do remember it increasing a little. (It's been 4 years as our son never took a bottle and was just breastfed.....) I would look at it as 10 oz if that is what it shows after adding formula. REMEMBER to look at how much of it is foam though too.

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S.H.

answers from Honolulu on

You are feeding her 10 ounces. The amount of water you put in the bottle.

Do you mean she is taking in 12 ounces of formula ALL day, or at just one sitting? If that is only 12 ounces ALL day... then no, that is not enough.
According to our Pediatrician, breastmilk/Formula is the PRIMARY source of nutrition in a baby for their 1st year of life... NOT solids and NOT other liquids.

Ultimately, you should ask her Pediatrician is her weight gain/percentages is fine or not or if he/she has any concerns. She is 9 months old now... so she is due for a Well-Baby check-up anyway.

As a side note: NEVER add more scoops of Formula to a bottle of water, thinking that it will add more nutrition or calories. Because, when it is so concentrated like that, it will overload the kidneys of a baby. ALWAYS measure the water first, in the bottle, then add the Formula powder.

All the best,
Susan

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L.D.

answers from Albany on

Regardless of which number you guy by, it sounds like she is only drinking about 2 bottles a day (16 oz.). That does NOT sound like enough to me. My children, even at school age, drink more than that a day! While I understand your husband and you might be smaller people, only 16 lbs at 9 months old? What does the pediatrician say about that because, again, to me, flags are going up something fierce that she is extremely underweight. Again, just basing it on my children but mine were all at least 10 lbs by the time they were 2 months old...

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K.H.

answers from Washington DC on

It shouldn't increase that much when you add the formula , are you leveling it off before you put it in the water?

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K.M.

answers from New York on

I used to make 24 ounces at once (12 scoops of formula) and then pour out 4 ounces (or whatever amount he was drinking at the time) into his bottle. I used a rubbermaid container but they also sell mixing containers specifically for formula in babies r us. Also, if she drinks less than 24 ounces in a day you can make any amount and keep it in the fridge. Think you have to use it within 24 hours once mixed. Hope this helps. I found it much easier doing it that way.

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