Enter the height (m) and the weight (kg) into the Calculator. The calculator will evaluate the Skin Area. 

Skin Area Formula

SA = .007184 * H^{.725} * W^{.425}

Variables:

  • SA is the Skin Area (m^2)
  • H is the height (m)
  • W is the weight (kg)

To calculate Skin Area, raise the height to .725, then multiply by the weight raised to .425, then multiply the result by .007184.

How to Calculate Skin Area?

The following steps outline how to calculate the Skin Area.


  1. First, determine the height (m). 
  2. Next, determine the weight (kg). 
  3. Next, gather the formula from above = SA = .007184 * H^.725 * W^.425.
  4. Finally, calculate the Skin Area.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

height (m) = 1.24

weight (kg) = 100

Frequently Asked Questions (FAQ)

What is the purpose of calculating Skin Area?

Calculating Skin Area is vital for determining the body surface area which is crucial in medical fields, especially for dosing medications, estimating physiological functions, and assessing the extent of burns or skin diseases.

How accurate is the Skin Area formula?

The Skin Area formula, such as the Mostellar equation, provides an estimation that is widely accepted in clinical settings. However, its accuracy can vary based on individual characteristics and it may not be as precise for people outside the average height and weight ranges.

Can I use the Skin Area formula for children?

Yes, the Skin Area formula can be used for children, but there are more specific formulas like the Haycock or Gehan and George equations that may provide more accurate estimates for pediatric populations.

Are there any limitations to using the Skin Area formula?

Yes, the formula may not provide accurate estimations for individuals who are significantly overweight or underweight. It is also less accurate for extreme heights. In such cases, alternative methods or formulas may be recommended.