A 12-month-old who is breastfeeding typically drinks around 500 grams (roughly 16 to 19 ounces) of breast milk per day, which provides 35 to 40% of their daily energy needs. The rest should come from solid foods. But this is an average, not a strict target. Some one-year-olds nurse frequently throughout the day, while others only want the breast in the morning and at bedtime.
What the Numbers Actually Look Like
At 12 months, breast milk shifts from being the primary food source to a complementary one. During the second half of the first year, solid foods gradually increase from about one-third of total daily calories to over half by the time your child turns one. That means by 12 months, solids should be carrying the majority of the nutritional load, with breast milk filling in the gaps.
The World Health Organization notes that between 12 and 23 months, an average breast milk intake of about 500 grams per day still provides a significant share of a child’s energy, along with essential fatty acids and vitamins that are often lower in typical toddler foods. That 500-gram figure translates to roughly 16 to 19 fluid ounces, or about three to four nursing sessions depending on how much your child takes at each feeding.
Why There’s No Exact Number
Unlike formula, where you can measure every ounce, breastfeeding doesn’t come with a built-in measuring cup. The CDC advises following your child’s cues to determine when they’re hungry and want to breastfeed, because the number of daily nursing sessions varies widely among toddlers. Some one-year-olds nurse four or five times a day. Others are so enthusiastic about table food that they only nurse twice.
Both patterns are normal. What matters more than counting ounces is whether your child is growing along their curve, eating a variety of solid foods, and staying well hydrated. A child older than 4 months who has fewer than three wet diapers in a day may not be getting enough fluids. Other signs of dehydration include a dry or sticky mouth, no tears when crying, sunken-looking eyes, and unusual sleepiness or confusion.
How Solids and Breast Milk Work Together
At 12 months, your child needs nutrients that breast milk alone can’t fully provide. Iron is the big one. Breast milk contains very little iron, and by this age your child’s iron stores from birth are largely depleted. Iron-rich foods like meat, beans, fortified cereals, and leafy greens become essential parts of the diet.
Vitamin D is another gap. Children 12 to 24 months need 600 IU of vitamin D each day, and breast milk usually does not provide all of it. If your child isn’t drinking vitamin D-fortified milk or getting regular sun exposure, a supplement may be needed. Calcium needs also increase in the second year, making dairy products or calcium-rich alternatives an important addition to meals.
The goal isn’t to replace breast milk with these foods but to build a diet where breast milk and solids each contribute what the other lacks. Breast milk remains a reliable source of fat, calories, immune factors, and certain vitamins. Solid foods deliver the iron, zinc, and fiber that breast milk runs low on.
If You’re Also Offering Cow’s Milk
Once your child turns one, whole cow’s milk becomes an option. But if you’re still breastfeeding, you don’t need to add cow’s milk at all. Breast milk provides comparable (and in many ways superior) nutrition. Some families offer both, which is fine, but watch the total volume of milk your child drinks from all sources.
Too much cow’s milk can crowd out other foods and make it harder for your child’s body to absorb iron. Most guidelines suggest keeping cow’s milk to around 16 to 24 ounces per day as an upper limit. If your child is still breastfeeding several times a day and eating well, cow’s milk may not be necessary, or only a small amount with meals might make sense.
How Long to Keep Breastfeeding
The WHO recommends continuing to breastfeed up to 2 years of age or beyond, alongside nutritionally adequate solid foods. The American Academy of Pediatrics supports breastfeeding for as long as both parent and child want to continue. There is no age at which breast milk stops being nutritionally valuable.
As your child moves deeper into toddlerhood, nursing sessions naturally become shorter and less frequent for most families. Many toddlers gradually self-wean between 12 and 24 months as their interest in table food grows. Others hold on to one or two comfort feedings well past age two. Neither timeline is a problem. The amount of breast milk your 12-month-old drinks will likely look different month to month, and that’s exactly how the transition is supposed to work.