At the eighth week of pregnancy (date of last menstrual period) the embryo is now referred to as a fetus. All organs are formed and the remaining 32 weeks of pregnancy is a time for the fetus to grow and mature. Take a look at this chart to see how your baby’s body weight and length changes during your pregnancy:
| Weeks Pregnant (measured from LMP) | Average Weight | Average Length |
|---|---|---|
| 8 | 0.035 oz (1 g) | 1.5 in (3.81 cm) |
| 10 | 0.175 oz (5 g) | 2.4 in (6.10 cm) |
| 12 | 0.7 oz (20 g) | 3.5 in (8.89 cm) |
| 14 | 2.1 oz (60 g) | 4.1 in (10.41 cm) |
| 16 | 4.2 oz (0.12 kg) | 6.25 in (15.88 cm) |
| 18 | 8.0 oz (0.23 kg) | 7.8 in (19.81 cm) |
| 20 | 12.0 oz (0.34 kg) | 9.75 in (24.77 cm) |
| 22 | 1 lb (0.45 kg) | 11.0 in (27.94 cm) |
| 24 | 1 lb 8 oz (0.68 kg) | 11.7 in (29.72 cm) |
| 26 | 2 lb (0.91 kg) | 12.5 in (31.75 cm) |
| 28 | 2 lb 12 oz (1.25 kg) | 13.7 in (34.80 cm) |
| 30 | 3 lb 10 oz (1.65 kg) | 14.8 in (37.60 cm) |
| 32 | 4 lb 6 oz (2.00 kg) | 15.6 in (39.62 cm) |
| 34 | 5 lb 3 oz (2.35 kg) | 16.4 in (41.66 cm) |
| 36 | 6 lb (2.72 kg) | 17.5 in (44.45 cm) |
| 38 | 6 lb 12 oz (3.10 kg) | 18.7 in (47.50 cm) |
| 40 | 7 lb 8 oz (3.40 kg) | 19.5 in (49.53 cm) |
lb = pounds cm = centimeters
oz = ounces g = grams
in = inches kg = kilograms