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Enough weight gain for 13 week old?

3 replies

August24Mama · 02/12/2024 15:50

Hi everyone, my LO had her 3 month check up today. She's 14 weeks in 2 days. At 6 weeks she was 11lb 7oz, and today she weighed 14lbs 5 oz. Is this an appropriate amount of weight gained in almost 8 weeks? Forgot to ask at the health visitors but she didn't seem concerned about her weight at all.

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Superscientist · 02/12/2024 16:44

11lb7oz is above 5.2kg which at 6 weeks would put her between the 75th and 91st percentile.
14lb 5oz is 6.5kg which at 14 weeks puts her on the 75th percentile. Looks like good weight gain to me.

They don't always stay exactly on the same line around the same bandings. Say they stay on the 75th percentile normal for them would be some times in the 75th-91st bracket or 50th-75th bracket. If they dropped to the 25th or below this would a significant drop.

August24Mama · 02/12/2024 17:26

Superscientist · 02/12/2024 16:44

11lb7oz is above 5.2kg which at 6 weeks would put her between the 75th and 91st percentile.
14lb 5oz is 6.5kg which at 14 weeks puts her on the 75th percentile. Looks like good weight gain to me.

They don't always stay exactly on the same line around the same bandings. Say they stay on the 75th percentile normal for them would be some times in the 75th-91st bracket or 50th-75th bracket. If they dropped to the 25th or below this would a significant drop.

Thank you so much for your help! I need to educate myself on weight conversions and percentiles lol you explained that really well. :)

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Superscientist · 02/12/2024 17:58

The charts all work in kg. If you put the weight in lb and Oz into Google and add "in kg" it will convert it for you. If you have your red book there's a conversion at the back. They should mark the weight and date on the graphs. The lines are various percentiles crossings multiple is a concern but it's normal to wiggle about a bit!

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