Baby Weight Chart Calculator

Track your baby's weight growth with our percentile calculator. Monitor healthy development milestones and ensure your baby is growing appropriately.

How to Use This Calculator

Using our baby weight chart calculator is simple. Follow these steps to track your baby's growth:

Enter your baby's age in months
Input your baby's current weight in pounds or kilograms
Select your baby's gender
Click "Calculate" to see the results

For most accurate results, measure your baby's weight when they are awake, fed, and diapered. Weigh them on the same scale each time for consistency.

Interpreting Results

The calculator will show you:

Your baby's weight percentile compared to other babies of the same age and gender
Whether your baby is growing at a healthy rate (normal, below average, or above average)
A comparison chart showing your baby's weight against typical growth patterns

Percentiles help you understand where your baby stands in terms of growth compared to others. A healthy baby typically falls between the 10th and 90th percentiles.

Percentile = (Number of babies weighing less than your baby / Total number of babies) × 100

Baby Weight Chart

Here's a typical growth chart showing weight milestones for babies:

Age (Months)	Average Weight (lbs)	Average Weight (kg)	Percentile Range
0-1	7.5-9.5	3.4-4.3	10th-90th
1-3	10-13	4.5-5.9	10th-90th
3-6	12-16	5.4-7.3	10th-90th
6-9	14-18	6.4-8.2	10th-90th
9-12	15-20	6.8-9.1	10th-90th

This chart provides general guidelines. Always consult with your pediatrician for personalized advice about your baby's growth.

FAQ

How often should I weigh my baby?: Most pediatricians recommend weighing your baby at every well-child visit, typically every 2-4 weeks during the first year, and then every 2-3 months after that.
What should I do if my baby's weight is outside the normal range?: If your baby's weight is consistently below or above the expected range, contact your pediatrician. They can help determine if there are any underlying health concerns.
Can I use this calculator for premature babies?: This calculator is designed for full-term babies. Premature babies have different growth charts that should be used instead.
Is weight the only measure of a baby's growth?: No, weight is just one measure. Other important growth indicators include height, head circumference, and developmental milestones.