How do you calculate BSA in m2?

Asked By: Arume Tort | Last Updated: 14th January, 2020
Category: science physics
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Where BSA is represented in m2, W is weight in kg, and H is height in cm, the formulas are as follows:
  1. Du Bois formula: BSA = 0.007184 × W0.425 × H0.725
  2. Mosteller formula: BSA = = 0.016667 × W0.5 × H0.5
  3. Haycock formula:
  4. Gehan and George formula:
  5. Boyd formula:
  6. Fujimoto formula:
  7. Takahira formula:
  8. Schlich formula:

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Also know, how do you calculate body surface area for medication doses?


  1. Equation: BSA (m2) = 0.0235 x Height(cm)0.42246 x Weight(kg)0.51456
  2. Equation: BSA (m2) = 0.024265 x Height(cm)0.3964 x Weight(kg)0.5378
  3. Equation: BSA (m2) = SQR RT ( [Height(cm) x Weight(kg) ]/ 3600 )

Likewise, how do you find the surface area? How to find the surface area of Rectangular Prisms:

  1. Find the area of two sides (Length*Height)*2 sides.
  2. Find the area of adjacent sides (Width*Height)*2 sides.
  3. Find the area of ends (Length*Width)*2 ends.
  4. Add the three areas together to find the surface area.
  5. Example: The surface area of a rectangular prism 5 cm long, 3 cm.

Correspondingly, how is BSA DuBois calculated?

Du Bois D, Du Bois EF. A formula to estimate the approximate surface area if height and weight be known. Arch Intern Med. 1916; 17:863-871.

Parameter LOINC's and Suggested Units
Height 8302-2 : cm
Weight 29463-7 : kg 3141-9 : kg 8350-1 : kg 8351-9 : kg

What does mg/m2 mean?

I assume this is for drug dosages, where some are specified as mg/kg (related to body mass), while some are specified as mg/m2 (related to "body surface area" or BSA). So you need to find someone's BSA. There are several formulas, all of which take into account height in addition to mass.

21 Related Question Answers Found

What is a BSA in medical terms?

Body surface area: BSA. The total surface area of the human body. The body surface area is used in many measurements in medicine, including the calculation of drug dosages and the amount of fluids to be administered IV. Average body surface area for adult men: 1.9 m2. Average body surface area for adult women: 1.6 m2.

What is a normal BSA calculated?

The average adult BSA is 1.7 m2 (1.9 m2 for adult males and 1.6 m2 for adult females). This number is used to calculate dosages for cytotoxic anticancer agents. To minimize variation in patient size, dosing for most chemotherapeutic agents use mg of drug per m2 of body surface area.

What is BSA formula?

BSA = 0.007184 × W0.425 × H0.725. Du Bois D, Du Bois EF (Jun 1916). "A formula to estimate the approximate surface area if height and weight be known".

Is 15 mg of methotrexate high?

Methotrexate is the anchor drug in the treatment of rheumatoid arthritis patients. The investigators defined initial starting doses of methotrexate as low (10 mg/week or less) or high (15 mg/week or more) based on the last reported dose of methotrexate at no later than 8 weeks of follow-up.

What is the formula for BMI?

The formula for BMI is weight in kilograms divided by height in meters squared. If height has been measured in centimeters, divide by 100 to convert this to meters. When using English measurements, pounds should be divided by inches squared. This should then be multiplied by 703 to convert from lbs/inches2 to kg/m2.

What is healthy BMI?

Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. BMI can be used to screen for weight categories that may lead to health problems but it is not diagnostic of the body fatness or health of an individual.

What is the average surface area of a person's skin?

For the average adult human, the skin has a surface area of between 1.5-2.0 square metres (16.1-21.5 sq ft.). The thickness of the skin varies considerably over all parts of the body, and between men and women and the young and the old.

Why is chemotherapy based on body surface area?

Dosing based on body surface area (BSA) is generally used in an effort to normalize drug concentrations. This is because it is well recognized that measures of many physiologic parameters that are responsible for drug disposition, including renal function and energy expenditure, can be normalized by use of BSA.

What is the formula for surface area of a box?

The width, height, and length of a box can all be different. If they are the same, then the box will become a perfectly square box. The volume, or amount of space inside a box is h × W × L. The outside surface area of a box is 2(h × W) + 2(h × L) + 2(W × L)

How do you convert surface area to volume?

To get the surface area of the 6 sides of the cube, multiply the length times the width, which would be 4 square meters. then multiply times 6 for the 6 sides, which would be 24 square meters. To get the volume, multiply the length times the width times the height, which would be 8 cubic meters.

What is surface area examples?

Surface Area Terms Defined
For example, a sphere and a cube are three-dimensional, but a circle and a square are not. A cube is a prism, but a sphere is not. A prism has a pair of congruent sides, called bases, like the cube, triangular prism and the rectangular prism.

How do you find the total surface area of a sphere?

To find the surface area of a sphere, use the equation 4πr2, where r stands for the radius, which you will multiply by itself to square it. Then, multiply the squared radius by 4. For example, if the radius is 5, it would be 25 times 4, which equals 100.

What is the unit for surface area?

In the International System of Units (SI), the standard unit of area is the square metre (written as m2), which is the area of a square whose sides are one metre long. A shape with an area of three square metres would have the same area as three such squares.

How do you find volume?

Units of Measure
  1. Volume = length x width x height.
  2. You only need to know one side to figure out the volume of a cube.
  3. The units of measure for volume are cubic units.
  4. Volume is in three-dimensions.
  5. You can multiply the sides in any order.
  6. Which side you call length, width, or height doesn't matter.

What is the formula for area of all shapes?

Area of Plane Shapes
Triangle Area = ½ × b × h b = base h = vertical height Square Area = a2 a = length of side
Rectangle Area = w × h w = width h = height Parallelogram Area = b × h b = base h = vertical height

What is the surface area of a rectangle?

The formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height.