Infant Weight Gain Rate Calculator
Weekly weight gain between two weigh-ins for a baby.
Your result
In the first three months, about 150–200 g per week is typical. Your provider judges growth using growth charts and feeding, so bring the numbers to your visit.
Medical disclaimer: This tool is for education and is not medical advice. Read more.
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Frequently asked questions
What does the Infant Weight Gain Rate Calculator do?
Weekly weight gain between two weigh-ins for a baby. Enter your values and the result and chart update instantly.
How accurate is it?
It uses published, widely used formulas. Results are estimates for education and planning, not a diagnosis. Talk to a qualified clinician about decisions affecting your health.
Is my information stored or shared?
No. All calculations run in your browser and nothing you type is sent to a server or saved.
What can I search to find this tool?
People find it by searching for: baby weight gain per week; is my baby gaining enough; infant growth rate.