# Age and Weight Charts and Calculators

A standard weight range isn't just one size fits all; you have to factor your age into the equation as well. For a good idea of where in your peer group your weight falls, you can consult age and weight charts, which provide generalized weight averages related to age. However, it's important to note that they don't necessarily help people determine ideal weight, because they don't figure in factors such as height or frame.

## Charts by Gender

According to the CDC, average weights and BMIs by age for the United States from 2007-2010 are below:

### Average Female Weight and BMI by Age

Age Weight BMI
20 - 29 161.9 pounds 27.5
30 - 39 169.1 pounds 28.7
40 - 49 168.0 pounds 28.6
50 - 59 170.0 pounds 29.3
60 - 69 170.5 pounds 29.6
70 - 79 164.9 pounds 29.5

### Average Male Weight and BMI by Age

Age Weight BMI
20 - 29 183.9 pounds 26.8
30 - 39 199.5 pounds 29.0
40 - 49 200.6 pounds 29.0
50 - 59 201.3 pounds 29.2
60 - 69 199.4 pounds 29.5
70 - 79 190.6 pounds 28.8

## Calculate Your Body Mass Index

A tool to help determine the right body weight is the BMI (Body Mass Index). This is also determined from a standard calculation. Use the following BMI calculator for simplicity and convenience.

1. Select between US customary and metric units of measure.
2. Enter your weight in pounds (US customary) or kilograms (metric).
3. Enter your height in feet and inches (US customary) or meters and centimeters (metric).
4. Click the "Calculate" button.
5. The widget will then display your BMI. To perform a new calculation, click the "Clear Results" button.

## What Your BMI Results Mean

The CDC explains how to interpret your BMI results:

 BMI Results What It Means Below 18.5 Underweight 18.5-24.9 Normal Weight 25-29.9 Overweight 30 and Above Obese

## Basal Metabolic Rate Calculator

Determining your basal metabolic rate is also useful.

1. Choose either US customary or metric units at the top of the widget.
2. Select male or female.
3. Click on your typical activity level, from sedentary to extremely active.
4. Enter your age in years.
7. Click on the "Calculate" button.
8. The widget will then display your BMR and the average number of calories you need to consume each day to maintain your current weight.
9. Click the "Clear Results" button to start a new calculation.

## Calculating Ideal Body Weight

The widget below can calculate your ideal body weight quickly and easily.

1. Choose between US customary and metric units of measurement.
2. Select between male and female.
3. Enter your height in feet and inches (US customary) or in meters and centimeters (metric).
4. Click the "Calculate" button.
5. The widget will compute your ideal body weight using both the Miller formula and the World Health Organization guidelines.
6. Click "Clear Results" to perform a new calculation.

## Age and Weight Gain

It's natural that you gain weight when you age, particularly between your 20s and your 30s. As you approach 40 and 50, you need fewer calories, but you may continue to eat as you did in younger years, resulting in weight gain. This need for fewer calories is due to physiological changes that take place in the aging process.

• Decreased metabolic rate, resulting in less ability to use energy and burn calories, usually from decreased muscle mass
• Nerves send impulses about 15 percent slower between the ages of 30 and 60 to 70, resulting in slower movement and reduced power output.
• Maximum lung capacity peaks around age 30, and decreases about 20 percent by 70 years of age.
• Cardiovascular ability decreases about 10 percent per decade for women after age 25.