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Weight to Body Surface Area Conversion for Cats

By Susan E. Fielder, DVM, MS, DACVP (Clinical Pathology), Clinical Assistant Professor, Department of Pathobiology, Center for Veterinary Health Sciences (CVHS), Oklahoma State University

Weight to Body Surface Area Conversion for Cats

Body wt (kg)

BSA (m2)

0.5

0.063

1.0

0.100

1.5

0.131

2.0

0.159

2.5

0.184

3.0

0.208

3.5

0.231

4.0

0.252

4.5

0.273

5.0

0.292

5.5

0.312

6.0

0.330

6.5

0.348

7.0

0.366

7.5

0.383

8.0

0.400

8.5

0.416

9.0

0.433

9.5

0.449

10.0

0.464

Note: body surface area (BSA) in square meters = K × (body wt in grams2/3) × 10-4

K = constant (10.0 for cats)

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