Babies Formula Print How Much Formula Should a Newborn Eat? Guidelines can help take the guessing out of feeding your little one By Jennifer White Updated July 15, 2019 Tara Moore / The Image Bank / Getty Images More in Babies Formula Growth & Development Health & Safety Everyday Care Baby Food Breastfeeding Preemies Gear and Products How much should a newborn eat? Figuring out the answer to this common question can be a little confusing. As a new parent, you may be worried if you're feeding your little one too much or too little. While there's no exact science when it comes to how much a newborn should eat, there is a simple mathematical equation to get a rough estimate of how many ounces your baby needs each day. Newborn Signs of Hunger and Fullness Before you crunch numbers, however, your best bet is to tune into your baby's hunger cues and fullness cues. Hunger cues include: Crying or fussinessSucking on fingers or placing fist in mouthSmacking of lips or making small sounds with his mouthOpening of his mouth when touched on his chin or lips Fullness cues include: Stopping feeding or only taking a few sucks before pausingSlowing down or falling asleepSpitting out formulaFidgeting or acting distracted The Formula for Calculating Formula To determine your baby's daily formula intake range, multiply your baby's weight in pounds by two. This is the lower end of how many ounces he needs in a 24-hour period. Then multiply his weight by 2.5. This is the upper range of ounces required within 24 hours. For example, a 12-pound baby would likely need 24 to 30 ounces in a 24-hour period. To determine how many ounces per bottle, divide those amounts by the number of feedings your baby takes per day. In this example, if your baby is taking 6 bottles in 24 hours, he would need approximately 4- to 5-ounce bottles. This equation can be used regardless of what type of infant formula you use (cow milk formula, soy-based formula, etc). Baby Weight in Pounds Ounces of Formula per Day 4 lbs. 8 to 10 oz. 5 10 to 13 6 12 to 15 7 14 to 18 8 16 to 20 9 18 to 23 10 20 to 25 11 22 to 28 12 24 to 30 13 26 to 33 14 28 to 35 15 30 to 38 Ounces of Formula by Age Another way to estimate formula amounts can be done by age. Newborns: as little as 1 to 2 ounces per feedingOne to two months: 3 to 4 ounces per feedingTwo to six months: 4 to 6 ounces per feedingSix months to a year: 6 to 8 ounces per feeding Overfeeding or Underfeeding Signs that you are not feeding your baby enough may include persistent crying, decreased urine output, a wrinkly look to the skin, a dry roof of the mouth and increased sleep. Conversely, signs that you might be overfeeding may include spitting up or vomiting, crying, pulling up legs to the abdomen, and behaviors that resemble colic. Generally speaking, timing feedings so that your baby has bottles that contain lesser amounts of formula more frequently is better than giving larger quantities of formula less often. And, of course, consult your pediatrician if you're concerned that your baby is losing weight or gaining too rapidly. Was this page helpful? Thanks for your feedback! Track your baby’s most exciting moments with our milestone checklist. Get it free when you sign up for our newsletter. Email Address Sign Up There was an error. Please try again. Thank you, , for signing up. What are your concerns? Other Inaccurate Hard to Understand Submit Article Sources American Association of Pediatrics. Amount and Schedule of Formula Feedings. Continue Reading How Much Breast Milk Should You Put in a Bottle for Your Baby? Managing Your Baby's Hunger If He or She Is Always Hungry? What Are The Benefits of Paced Bottle Feeding? How Often Should You Breastfeed Your Newborn? Your 5-Week-Old Baby's Development & Milestones Answers to Common Questions About Baby Pee Your 1-Week Old Baby's Development & Milestones Exclusive Pumping, Formula, and Bottle Feeding Want to Learn How to Do Some Basic NICU Math? Ways to Tell If Your Baby Is Getting Enough Breast Milk An Overview of Newborn Babies How to Feed Your Baby by Breastfeeding or Food Type How to Know When Your Baby Is Hungry Can You Breastfeed and Also Give Your Baby Infant Formula? How to Choose the Best Baby Formula How Often Should You Breastfeed Your Baby?