Boys Weight chart in lbs for Children 8 years & 5 months old

Weight chart for 8 Years 5 Months boys

Weight benchmarks for boys at 8 Years 5 Months, from the CDC growth charts.

Weight percentiles for 8 Years 5 Months boys

CDC growth chart data shows the following weight distribution for boys at 8 Years 5 Months:

• 5th percentile: 47.0 lbs

• 25th percentile: 53.2 lbs

• 50th percentile (median): 58.8 lbs

• 75th percentile: 66.1 lbs

• 95th percentile: 81.4 lbs

The percentile values on this page are displayed in lbs.

Percentiles rank your child's measurement against a reference population of boys. The 50th percentile is the midpoint - half measure above it and half below.

Weight and development for boys

Between ages 8 and 11, weight gain of 3-5 kg per year is typical. Some children, particularly girls, may begin their pubertal growth spurt in this age range, with associated increases in both height and weight. Regular physical activity - at least 60 minutes of moderate to vigorous activity per day - is the most important behavioural factor in healthy weight maintenance at 8 years.

Family habits that support healthy weight

For primary school-age children, the most evidence-based supports for healthy weight are regular family meals, adequate sleep (9-11 hours for ages 6-12), at least 60 minutes of moderate to vigorous physical activity daily, and limited ultra-processed food and sugary drinks.

Talking about weight with children

Avoid discussing weight, body size, or dieting in front of children - research links this to higher rates of disordered eating in adolescence. If a GP or school nurse identifies a weight concern, framing any lifestyle changes in terms of energy, strength, and wellbeing is more effective and less harmful than weight-focused messaging.

When to involve a health professional

If you have concerns about a child's weight, the school nurse or GP is the appropriate first point of contact. They can assess whether the pattern is concerning in context of the full growth history and refer to a paediatric dietitian or specialist if needed.

Frequently asked questions

How much weight does a child gain per year?

After infancy, the rate of weight gain slows considerably. Toddlers typically gain 1.5-2 kg per year, preschoolers around 2 kg per year, and school-age children 3-5 kg per year. During puberty, the rate accelerates significantly - 4-8 kg per year is common during the peak growth phase.

Should I be concerned if my child's weight has stayed the same for a few months?

Brief weight plateaus are common in growing children and are usually not a cause for concern if the child appears healthy, has a good energy level, and is growing in height. A plateau of 3 months or more, particularly if accompanied by any health concerns or a fall across percentile lines, is worth discussing at the next GP or child health check.

What is a healthy weight for this age?

The percentile table on this page shows the full range of typical weights. All values from the 5th to the 95th percentile are within normal limits. Weight at a single point in time is less informative than a consistent growth pattern - a child who has always been at the 25th percentile and remains there is growing normally.

Data sources and methodology

The percentile ranges on this page are drawn from CDC growth chart data from the National Center for Health Statistics and WHO Child Growth Standards (for children under 5). CDC data published May 30, 2000, with 2022 extended BMI tables. Percentiles are modelled using the LMS method (Box-Cox transformation), which accounts for the skewed distribution of measurements at each age. All measurements are given in metric units with imperial equivalents.

Growth charts are screening tools, not diagnostic ones. If you have concerns about your child's measurements, a GP or paediatrician is the right first step.