Baby Weight Calculator
Estimate your baby's weight percentile based on age, weight, and gender using WHO growth charts.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
Previous Results
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Frequently Asked Questions
A baby weight percentile indicates how your baby's weight compares to other babies of the same age and gender. For example, the 50th percentile means your baby weighs more than 50% of babies.
We use WHO growth chart data with median and standard deviation for each month. The z-score is computed as (baby's weight - median) / SD, then converted to percentile using the standard normal distribution.
The calculator rounds to the nearest month. For precise results, consult your pediatrician.
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