جدول قد و وزن جنین طی هفته های 8 تا 43 بارداری (Benson و Hadlock )

Pregnancy week Length (cm) Mass (g)

8 weeks 1.6 cm 1 gram

9 weeks 2.3 cm 2 grams

10 weeks 3.1 cm 4 grams

11 weeks 4.1 cm 7 grams

12 weeks 5.4 cm 14 grams

13 weeks 7.4 cm 23 grams

14 weeks 8.7 cm 43 grams

15 weeks 10.1 cm 70 grams

16 weeks 11.6 cm 100 grams

17 weeks 13 cm 140 grams

18 weeks 14.2 cm 190 grams

19 weeks 15.3 cm 240 grams

20 weeks 16.4 cm 300 grams

پس از هفته 20 ام قد کودک از سر تا پاشنه اندازه گیری می شود.

Pregnancy week Length (cm) Mass (g)

20 weeks 25.6 cm 300 grams

21 weeks 26.7 cm 360 grams

22 weeks 27.8 cm 430 grams

23 weeks 28.9 cm 501 grams

24 weeks 30 cm 600 grams

25 weeks 34.6 cm 660 grams

26 weeks 35.6 cm 760 grams

27 weeks 36.6 cm 875 grams

28 weeks 37.6 cm 1005 grams

29 weeks 38.6 cm 1153 grams

30 weeks 39.9 cm 1319 grams

31 weeks 41.1 cm 1502 grams

32 weeks 42.4 cm 1702 grams

33 weeks 43.7 cm 1918 grams

34 weeks 45 cm 2146 grams

35 weeks 46.2 cm 2383 grams

36 weeks 47.4 cm 2622 grams

37 weeks 48.6 cm 2859 grams

38 weeks 49.8 cm 3083 grams

39 weeks 50.7 cm 3288 grams

40 weeks 51.2 cm 3462 grams

41 weeks 51.7 cm 3597 grams

42 weeks 51.5 cm 3685 grams

43 weeks 51.3 cm 3717 gram