Baby Growth Chart - Average Weekly Size for Weeks 13-25
Growth Chart, Weeks 3-12 | Growth Chart, Weeks 13-25 | Growth Chart, Weeks 26-40
Please Note:
- Pregnancy weeks are counted from your last menstrual period.
- Weeks 3-19, measurements are taken from head to rump.
- Weeks 20-40, measurements are taken from head to toe.
Week 13

Fetus Size
Your baby is about the size of a plum during week 13.
LENGTH: 3.0 in / 7.62 cm
WEIGHT: 0.9 oz / 25.5 g
Fetus Image Week 13 >>
Week 14

Fetus Size
Your baby is about the size of a lemon during week 14.
LENGTH: 3.51 in / 8.92 cm
WEIGHT: 1.60 oz / 45.4 g
Fetus Image Week 14 >>
Week 15

Fetus Size
Your baby is about the size of a peach during week 15.
LENGTH: 4.17 in / 10.59 cm
WEIGHT: 2.56 oz / 72.6 g
Fetus Image Week 15 >>
Week 16

Fetus Size
Your baby is about the size of an avocado during week 16.
LENGTH: 4.69 in / 11.9 cm
WEIGHT: 3.66 oz / 103.8 g
Fetus Image Week 16 >>
Week 17

Fetus Size
Your baby is about the size of an apple during week 17.
LENGTH: 5.25 in / 13.3 cm
WEIGHT: 5.04 oz / 142.3 g
Fetus Image Week 17 >>
Week 18

Fetus Size
Your baby is about the size of an orange during week 18.
LENGTH: 5.67 in / 14.4 cm
WEIGHT: 6.03 oz / 170.9 g
Fetus Image Week 18 >>
Week 19

Fetus Size
Your baby is about the size of an onion during week 19.
LENGTH: 6.17 in / 15.7 cm
WEIGHT: 8.58 oz / 243.2 g
Fetus Image Week 19 >>
Please note: Measurements are taken from head to toe for weeks 20-40.
Week 20

Fetus Size
Your baby is about the size of a pomegranate during week 20.
LENGTH: 6.60 in / 26 cm
WEIGHT: 10.69 oz / 303.1 g
Fetus Image Week 20 >>
Week 21

Fetus Size
Your baby is about the size of a mango during week 21.
LENGTH: 10.68 in / 27.1 cm
WEIGHT: 12.9 oz / 365.7 g
Fetus Image Week 21 >>
Week 22

Fetus Size
Your baby is about the size of jicama during week 22.
LENGTH: 11.03 in / 28 cm
WEIGHT: 15.32 oz / 434.3 g
Fetus Image Week 22 >>
Week 23

Fetus Size
Your baby is about the size of a grapefruit during week 23.
LENGTH: 11.49 in / 29.2 cm
WEIGHT: 1.13 lb / 512.6 g
Fetus Image Week 23 >>
Week 24

Fetus Size
Your baby is about the size of a coconut during week 24.
LENGTH: 12.02 in / 30.5 cm
WEIGHT: 1.39 lb / 630.5 g
Fetus Image Week 24 >>
Week 25

Fetus Size
Your baby is about the size of a papaya during week 25.
LENGTH: 12.93 in / 32.8 cm
WEIGHT: 1.49 lb / 675.9 g
Fetus Image Week 25 >>
Growth Chart, Weeks 3-12 | Growth Chart, Weeks 13-25 | Growth Chart, Weeks 26-40