The American Academy of Pediatrics generally recommends 16 to 24 ounces of whole cow’s milk per day for toddlers ages 12 to 24 months.
If your baby just turned one, you’re probably wondering whether it’s time to switch from formula or breastmilk to cow’s milk — and exactly how much to pour into their sippy cup. The answer isn’t quite as simple as “fill it up.” Many parents assume more milk means better nutrition, but for a 13-month-old, there is a sweet spot.
Most major health organizations, including the American Academy of Pediatrics, agree that toddlers between 12 and 24 months should drink about 16 to 24 ounces of whole cow’s milk per day. That’s roughly two to three cups. Going over that amount can backfire, especially by crowding out iron-rich foods. Here’s what you need to know about getting the balance right.
The Recommended Range for a 13-Month-Old
For a 13-month-old, milk is still an important part of the diet — but it’s no longer the main source of nutrition. Solid foods take over as the primary way your toddler gets calories and nutrients, while milk becomes a complementary drink.
The AAP’s recommended drink chart says children 12 to 24 months should have 16 to 24 ounces of whole cow’s milk each day. The NHS suggests at least about 12 ounces per day, along with other dairy foods like yogurt or cheese. The takeaway is that the recommended range generally sits between 16 and 24 ounces, with the lower end being fine if your child also eats other dairy.
Whole milk is recommended because toddlers need the extra fat for brain development and growth. Reduced-fat or skim milk should wait until after age two unless your pediatrician advises otherwise for a specific reason.
Why Too Much Milk Can Be a Problem
Milk is nutritious, but it’s also very filling. When a 13-month-old drinks more than about 24 ounces a day, it can crowd out other important foods. Here are some potential consequences of going over the recommended limit:
- Iron-deficiency anemia risk: Milk is low in iron, and large amounts can interfere with iron absorption. Children’s Hospital of Philadelphia notes that too much cow’s milk is a common cause of iron deficiency in toddlers.
- Displaced solid foods: A belly full of milk leaves less room for iron-rich meats, fortified cereals, beans, and vegetables that provide other key nutrients like zinc and vitamin C.
- Milk dependency: Some toddlers start refusing solid foods and only want milk. The AAP offers strategies to gently cut back if your child has become hooked on the bottle or sippy cup.
- Digestive discomfort: Too much calcium from milk can contribute to constipation in some children, especially if their fiber intake from solids is low.
The solution isn’t to avoid milk — it’s to treat it as a complement to meals, not a replacement. Offering milk only at mealtimes can help keep your toddler’s appetite balanced throughout the day.
How Milk Fits Into a Toddler’s Daily Diet
A typical day for a 13-month-old includes three meals and two to three snacks. Per the CDC feeding schedule, toddlers should eat or drink every two to three hours. This naturally spaces milk intake across the day if you offer it with meals rather than between them.
Below is a sample schedule that stays within the typical 16 to 24 ounce range. Your child’s actual needs may vary based on appetite and growth.
| Mealtime | Milk Serving (oz) | Solid Food Examples |
|---|---|---|
| Breakfast | 4–6 | Scrambled egg, whole-grain toast, sliced berries |
| Mid-morning snack | Water only | Soft fruit, yogurt, or whole-grain cracker |
| Lunch | 4–6 | Shredded chicken, steamed broccoli, avocado |
| Afternoon snack | Water only | Cheese stick, sliced cucumber, hummus |
| Dinner | 4–6 | Ground turkey, sweet potato, peas |
| Bedtime (optional) | 0–4 | None (offer milk in a cup, then brush teeth) |
This adds up to roughly 16 to 22 ounces — right within the general target. If your child drinks significantly more than this, you may want to offer water between meals instead of milk to keep them hydrated without overdoing dairy.
Tips for Transitioning From Formula or Breastmilk
Switching to cow’s milk around 12 months can take a little patience. Many toddlers are used to the taste and warmth of formula or breastmilk. Here are some steps that many parents find helpful:
- Start slow: Replace one feeding per day with whole milk in a sippy cup. Continue the others with formula or breastmilk for a few days.
- Mix gradually: If your child resists the taste, try mixing a small amount of cow’s milk with their usual milk and slowly increase the proportion over one to two weeks.
- Keep it cool or warm: Some toddlers prefer milk slightly warmed, similar to formula. Others are fine with refrigerator-cold milk. Experiment both ways.
- Switch to a cup: Use a sippy cup or open cup instead of a bottle. This helps separate the milk habit from the comforting bottle routine.
- If dependency is already an issue: The AAP suggests gradually reducing milk intake over one week until your child is having no more than 16 ounces per day. Replace the reduction with water and solid snacks.
Patience is key — most toddlers adjust within a couple of weeks. If you have concerns about your child’s weight or iron levels, your pediatrician can offer personalized guidance.
What About Milk Alternatives or Reduced-Fat Milk?
Once you know the general milk limit, the next question is which type of milk to offer. For a 13-month-old, whole cow’s milk is the standard recommendation. Reduced-fat or skim milks are generally not recommended before age two because they lack the fat needed for developing brain tissue.
The connection between excessive milk intake and iron deficiency is well documented — the milk anemia risk article from Children’s Hospital of Philadelphia explains how large amounts of milk can interfere with iron absorption. Plant-based milk alternatives also need special consideration.
| Milk Type | Recommended for 13-Month-Old? | Key Points |
|---|---|---|
| Whole cow’s milk | Yes | Provides fat for brain growth; stick to 16–24 oz per day |
| Reduced-fat (2%) or skim milk | No | Too low in fat; wait until after age 2 unless directed by a doctor |
| Almond milk | Not as a primary milk | Low in protein and fat; AAP recommends against plant-based milks under age 5 unless medically necessary |
| Soy milk | Not as a primary milk | May be considered if fortified, but whole cow’s milk is preferred |
| Oat milk | Not as a primary milk | Often low in protein; not a substitute for whole milk at this age |
The AAP advises that children under five should not consume plant-based milk alternatives as a primary milk source unless there is a specific medical reason, such as a dairy allergy. If you suspect your child cannot tolerate dairy, speak with your pediatrician before switching to an alternative.
The Bottom Line
A 13-month-old typically does well on 16 to 24 ounces of whole cow’s milk per day, offered with meals rather than between them. Keeping milk within this range helps ensure your toddler gets enough iron, zinc, and other nutrients from solid foods. If your child currently drinks more than 24 ounces, a gradual reduction over a week or two can make the transition smoother.
Your pediatrician can help you tailor these guidelines based on your child’s growth, appetite, and any concerns about iron levels. A quick discussion at the next well-child visit can confirm whether your toddler’s milk intake is on track.
References & Sources
- CDC. “How Much and How Often to Feed” The CDC recommends feeding toddlers something to eat or drink every 2 to 3 hours, which typically results in about 3 meals and 2 to 3 snacks per day.
- Children’s Hospital of Philadelphia. “Making Switch Cow S Milk 1 Year Olds” Drinking more than 24 ounces of whole milk per day can lead to iron-deficiency anemia because milk is low in iron and large amounts can displace iron-rich foods.