A typical toddler weighs between about 20 and 35 pounds, depending on age and sex. At 12 months, most children weigh around 20 to 22 pounds. By their third birthday, that number climbs to roughly 28 to 34 pounds. The range is wide because toddlers grow at very different rates, and a child consistently tracking along a lower or higher percentile is usually perfectly healthy.
Average Weight by Age and Sex
The CDC growth charts, based on large population surveys, provide the 50th percentile weights that pediatricians use as a reference point. These are the midpoint values, meaning half of children weigh more and half weigh less.
- 12 months: Girls average about 20 pounds; boys about 21 pounds.
- 18 months: Girls average about 22.5 pounds; boys about 24 pounds.
- 24 months: Girls average about 25 pounds; boys about 27 pounds.
- 36 months: Girls average about 29 pounds; boys about 30.5 pounds.
These are midpoint figures. A child at the 25th percentile or the 75th percentile is still within the normal range. What matters most is that your toddler follows a consistent curve over time rather than hitting one specific number.
How Fast Toddlers Gain Weight
Growth slows dramatically after the first year. Between ages 1 and 2, a toddler typically gains only about 5 pounds total, a sharp drop from the roughly 14 pounds most babies gain in their first 12 months. From ages 2 to 5, weight gain stays at about 5 pounds per year. This slowdown is completely normal, and it often coincides with toddlers becoming pickier eaters, which can worry parents unnecessarily.
Growth also doesn’t happen in a smooth, steady line. Toddlers go through spurts where they may gain noticeably in a short period, followed by weeks of little change. A single weigh-in that looks flat or jumps up doesn’t tell you much. The pattern across several months is what counts.
What Influences Your Toddler’s Weight
Genetics play the biggest role. Taller, larger-framed parents tend to have larger toddlers, and the reverse is equally true. Your child’s birth weight also sets a starting trajectory that often persists through early childhood, though some babies shift percentiles in the first year or two before settling into their own curve.
Nutrition matters too, but not in the way many parents assume. Toddlers are notoriously erratic eaters. They may refuse lunch entirely one day and eat twice as much the next. Over the course of a week, most healthy toddlers self-regulate their calorie intake surprisingly well. Breastfeeding history can also factor in. Research suggests that prolonged breastfeeding may help moderate weight gain in children who carry genetic variants associated with higher body weight, potentially reducing the risk of early childhood obesity.
Activity level makes a difference as well. A toddler who is constantly climbing, running, and exploring will have a different body composition than one who is more sedentary, even if they weigh the same on a scale.
How to Weigh Your Toddler at Home
Digital baby scales give the most accurate reading for children under two. Place the scale on a hard, flat surface like a kitchen or bathroom floor, never on carpet. Weigh your toddler naked, ideally before a meal, and try to do it at the same time of day if you’re tracking over weeks. If the child is squirming, wait for the display to stabilize before recording the number.
For toddlers who won’t stay still on a baby scale, there’s a simple workaround using a regular bathroom scale. Step on the scale alone and note your weight. Then step on again holding your naked toddler. Subtract the first number from the second. This method is less precise (bathroom scales typically round to the nearest half-pound) but works well enough for monitoring trends at home.
Keep in mind that home weights can fluctuate by a pound or more based on a recent meal, a full diaper you forgot to remove, or even clothing. Clinic scales are calibrated more precisely, so use your pediatrician’s measurements as the official record.
Growth Charts and Percentiles
Pediatricians plot your toddler’s weight on a growth chart at each well visit. For children under 2, they use weight-for-length charts. Starting at age 2, they switch to BMI-for-age, which factors in both weight and height relative to age and sex. The CDC recommends BMI screening at least once a year for all children 2 and older.
The percentile thresholds are straightforward. Below the 5th percentile is classified as underweight. The 5th to 85th percentile range is considered a healthy weight. The 85th to 95th percentile falls into the overweight category, and the 95th percentile or above indicates obesity. These cutoffs are screening tools, not diagnoses. A muscular, tall toddler might register at a high percentile without any health concern.
The most important thing your pediatrician watches for is consistency. A toddler who has been tracking along the 20th percentile since birth is growing normally. A toddler who drops from the 50th to the 10th percentile over a few months warrants a closer look.
When Weight Changes Signal a Problem
Most weight variation in toddlers is harmless, but certain patterns deserve attention. A child who stops gaining weight for an extended stretch, or who actually loses weight, may be experiencing what clinicians call growth faltering. There’s no single cutoff for how many weeks of plateau should raise concern. The red flags are broader: not gaining weight as expected, not growing in length, or a noticeable drop across percentile lines on the growth chart.
Growth faltering doesn’t always have obvious symptoms. A toddler can look healthy and energetic while quietly falling behind on their curve. This is one of the main reasons routine well-child visits matter. Your pediatrician compares each new measurement to the full history and can spot a trend you might miss at home. If you notice your toddler consistently refusing food, losing weight, or seeming unusually low-energy, that’s worth bringing up before the next scheduled visit.