How Many Scoops of Formula For 3 oz?

By Lynn •  Updated: 03/18/24 •  9 min read
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Sometimes when measuring your baby’s formula, things can get confusing when you want to feed your baby an amount of formula that isn’t the norm. While most formulas give guidance for serving two and four ounces of formula, you may be wondering how many scoops of formula for 3 oz. Thankfully, we’ve got the answers you need to figure out how many scoops of formula you’d need to feed your baby three ounces of formula. 

How Much Formula Do I Put in a 3 Ounce Bottle?

First and foremost, it is imperative that you read the directions on your baby’s formula label to ensure that you are measuring correctly. All formulas will come with specific directions on how to mix the formula and some directions will vary. 

With that said, the answer to “How much formula do I put in a 3-ounce bottle?” is one and a half scoops. 

Because most baby formulas come with instructions on giving your baby one scoop of formula per 2 oz of water, it makes sense that 3 oz of water would require 1 ½ scoops. 

When measuring this, be very careful that you are measuring exactly 1 ½ scoops; nothing more and nothing less. Measuring the correct amount of formula is imperative when feeding your baby. Giving your baby too much or too little formula for his or her feedings could have dire effects on his or her health. We will take a look at some of those adverse effects later on in this post. 

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How Much is 3 Scoops of Formula?

Three scoops of formula is not to be confused with 3 oz of formula; these are very different. If you use 3 scoops of formula, you will need to dilute it in 6 oz of water, in most cases, for this to be the correct ratio. Otherwise, adding three scoops of formula to only 2-4 oz of water would provide too high of a concentration of formula which could have unsavory effects on your little one’s health.

To prevent making errors when mixing your baby’s bottle, be sure to do the research and read the directions thoroughly on your baby’s formula label. For the purposes of this article, we are using general measurements of 1 scoop to every 2 oz of water but some formula ratios may be different. Always follow the directions on the formula package label over anything you may read online. 

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How Many Scoops of Formula Do I Give My Baby?

The number of scoops you should give in your baby’s formula should follow the protocol listed on your baby’s formula. 

In general, you should always use one scoop of baby formula per 2 oz of clean water. Never do a heaping scoop of formula to water, and never “pack” the formula water down into the scoop. 

When eyeballing the correct measurements for 3 oz of formula, be sure to measure the 1 ½ scoops needed carefully to avoid under- or over-nourishing your little one, especially on a frequent basis. 

How Many Oz Is a Scoop of Formula?

One scoop of formula is typically measured for 2 oz of water. From there, you will typically add another scoop of formula every 2 oz. Therefore, 4 oz of water will require 2 scoops, 6 oz of water will require 3 scoops, and so on. 

If you are measuring at odd intervals, i.e., 3 oz, 5 oz, and so forth, you’ll need to measure in increments of half scoops. For ease, we’ve included a table below to help you calculate the amount of scoops needed (in most cases) to create your infant formula.

Ounces of WaterScoops of Formula Needed*
1 oz.5
2 oz1
3 oz1.5
4 oz2
5 oz2.5
6 oz3
7 oz3.5
8 oz4
*Note: Remember that these are simply guidelines according to common practice when mixing formulas. Always read your formulas instructions first and follow those directions before following any guidance on formula feeding you read elsewhere on the internet. 

How Many Scoops of Powder Formula For 3 oz?

How Many Scoops of Enfamil Formula For 3 oz?

Enfamil is a popular brand of baby formula. It is pediatrician-recommended and specially formulated to give your child the nutrition he or she needs. The amount of scoops needed for Enfamil formula for 3 oz of water is one and a half scoops. 

This can be tricky to measure! If you want to serve your baby 3 oz be sure to measure the amount of formula you use carefully so that your baby receives the amount of nutrients and calories that he or she needs to thrive. 

How Many Scoops of Similac Formula For 3 oz?

Similac formula is one of the best-recognized formulas on the market and is known to be a high-quality and specially designed formula that contains no Palm Oleic Oil which is known to cause constipation in babies. 

When measuring Similac formula, you’ll want to use only one and a half scoops of formula for every 3 oz of water. As stated before, be sure not to “pack” the formula when measuring and be sure to do your best to correctly measure a half of a scoop; otherwise, you may want to stick to conventional measurements (2oz, 4 oz, and 6 oz) to ensure that your measurements are correct. 

Serving your child the correct number of nutrients and calories is vital to his or her health; you don’t want to compromise that by over or under-nourishing your child when you improperly measure his or her formula.

How Many Scoops of Formula for 3.5 oz?

You may wish to skip measuring formula for 3.5 oz. 

Why? Because when measuring formula, it is imperative that you get the right amount of formula in your baby’s bottle without getting too much or too little by way of water to powder ratio. When measuring half scoops, it is already challenging enough to get the right amount measured. But when you try measuring for an amount such as 3.5 oz things can get difficult.

The technical answer to this question is that you’d have to use 1 ¾ scoops of formula. But again, we don’t recommend doing this. Simply measure for 4 oz, or 3 oz if you must. This will make things easier on you and will ensure proper nutrition for your baby.

How Many Scoops of Formula for Newborn

3 oz of Formula For Newborn

Most newborns will take up to 1-3 oz of formula per feeding. Therefore, you will want to mix anywhere from a half of a scoop up to 1.5 scoops of formula, depending on how much you are feeding your infant for each feeding.

Remember, 1 oz of formula is equivalent to one half of a scoop of formula, and one full leveled-scoop of formula powder is to be diluted with 2 oz of water. 

If your newborn requires 3 oz of formula, do 1.5 scoops of formula to 3 oz of water, being careful to measure properly. 

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How to Make 3 oz of Formula

How Do You Mix 3 oz of Similac?

Mixing most formulas, including Similac and Enfamil, will be similar processes. If you’re wondering about Parents Choice Formula vs Similac or Similac vs Enfamil for supplementing, know that the choice is up to you and will depend on how your baby responds to each.

Nevertheless, to mix bottle formula, follow the directions on the package. In most cases, the following method will work as well:

  1. Boil the amount of water you want to use in your baby’s bottle and allow it to cool. This kills off any bacteria in the water. Know that some of the water may evaporate during the boiling process. Because of this, you may wish to add a little extra water to your pot than what you actually need to feed your baby.
  2. Once the boiled water has cooled, place the water in a clean bottle. 
  3. Measure the amount of formula to be added to the amount of water you’ve measured. Always check the label of your formula to ensure the correct measurements for your selected brand of formula. 
  4. Screw the bottle top on the bottle and swirl the bottle gently. You may also gently stir the milk with a sterilized stirrer. While many recommend shaking the bottle, doing so may cause bubbles to appear in the formula which may cause gas and discomfort for your baby. 

What Happens If You Put Too Much Formula to Water?

What Happens If You Put Too Much Formula Powder in Bottle?

Over- or under-concentrating formula is a dangerous habit that could do your baby a great deal of harm. Never serve your baby a bottle that has too much or too little formula. 

Putting too much formula in a bottle may cause your baby to become dehydrated and also may cause him or her constipation and discomfort.

Puttting too little formula in your baby’s bottle can lead to water intoxication which can lead to brain swelling and also can lead to poor nutrition which has a variety of undesirable outcomes for your baby. 

If you’ve mistakenly put too much or too little formula in your baby’s bottle, you’ll need to make up a fresh bottle for the sake of your baby’s health and safety. 

Measuring Formula for 3oz: An Easy Adjustment!

Measuring formula for 3 oz is relatively simple, however, you’ll want to ensure you get a proper measurement each time to avoid over- or under–nourishing your baby. For more advice on formula measurements, read the label on your formula and contact your pediatrician for tailored advice. 


Lynn is a freelance writer, a wife, and a mother of two beautiful kids. Lynn started Infant Empire with the aim of making parenting easier for fellow mums and dads. She believes the parenting tips provided here will be of great help to all parents.

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