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Weight to Body Surface Area Conversion for Dogs

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 Dogs

Body wt (kg)

BSA (m2)

Body wt (kg)

BSA (m2)

0.5

0.064

26

0.886

1.0

0.101

27

0.909

1.5

0.132

28

0.931

2.0

0.160

29

0.953

2.5

0.186

30

0.975

3.0

0.210

31

0.997

3.5

0.233

32

1.018

4.0

0.255

33

1.039

4.5

0.275

34

1.060

5

0.295

35

1.081

6

0.333

36

1.101

7

0.370

37

1.121

8

0.404

38

1.142

9

0.437

39

1.162

10

0.469

40

1.181

11

0.500

41

1.201

12

0.529

42

1.220

13

0.558

43

1.240

14

0.587

44

1.259

15

0.614

45

1.278

16

0.641

46

1.297

17

0.668

47

1.315

18

0.694

48

1.334

19

0.719

49

1.352

20

0.744

50

1.371

21

0.769

51

1.389

22

0.793

52

1.407

23

0.817

53

1.425

24

0.840

54

1.443

25

0.864

55

1.461

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

K = constant (10.1 for dogs)

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