How Much Formula Does Your Baby Need? The Ultimate Guide & Calculator for New Parents

Feeding your baby can be one of the most bonding and joyful experiences of early parenthood, but it also comes with a ton of questions. One of the most common ones is: “How much formula should my baby be drinking?”

Whether you’re exclusively formula feeding or supplementing with formula, this guide will walk you through the basics of how much to feed, when to feed, and how to ensure your baby is getting the nutrition they need to thrive.

How Much Formula Does a Baby Need?

There’s no one-size-fits-all answer, but a helpful rule of thumb is:

• 150 ml per kilogram of body weight (per day) for babies fed with metric units.

• 2.5 oz per pound of body weight (per day) for babies fed with imperial units.

For example, a baby weighing 5 kg would typically need about 750 ml per day, which can be divided across several feedings.

But remember, these are general estimates. That said, always pay attention to your baby’s hunger and fullness cues and consult your pediatrician if you’re unsure.

Signs That Your Baby Is Getting Enough Formula

• Regular wet diapers (at least 6 per day after the first week)

• Steady weight gain

• Appears satisfied after feedings

• Sleeps well between feedings - Good sleep often indicates proper nourishment. Want to track your baby’s sleep patterns?

  👉 Check out our guide on tracking your baby’s sleep

Formula Feeding Tips

• Always prepare formula according to the manufacturer’s instructions.

• Do not force your baby to finish a bottle if they seem full.

• Discard any leftover formula after a feeding to avoid bacterial growth.

• If you’re unsure about the right amount, consult with your healthcare provider.

Try Our Formula Feeding Calculator