Pregnancy
Calculator

Track pregnancy progress week by week with baby size comparisons, development milestones, and trimester information.

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First Day of Last Period

Progress

Week 13 of 401st Trimester196 days remaining

30% complete30%

Due Date

Nov 16, 2026

Gestational Age

12w 0d

This Week

1st Trimester

🫑

Size of a Pea pod

Length

7.4 cm

Weight

23 g

Development

Vocal cords forming; intestines move into abdomen

Week-by-Week Reference

Week	Size	Length	Weight	Milestone
4	Poppy seed	0.1 cm	<1 g	Embryo implants in the uterus; cells begin differentiating
5	Sesame seed	0.2 cm	<1 g	Heart begins to beat; neural tube forming
6	Lentil	0.6 cm	<1 g	Nose, mouth, and ears start to take shape
7	Blueberry	1.3 cm	<1 g	Brain growing rapidly; arm and leg buds appear
8	Raspberry	1.6 cm	1 g	Fingers and toes begin forming; baby starts moving
9	Cherry	2.3 cm	2 g	Essential organs have formed; embryo becomes a fetus
10	Strawberry	3.1 cm	4 g	Bones begin to harden; fingernails developing
11	Fig	4.1 cm	7 g	Baby can open and close fists; tooth buds forming
12	Lime	5.4 cm	14 g	Reflexes developing; eyes move closer together
13	Pea pod	7.4 cm	23 g	Vocal cords forming; intestines move into abdomen
14	Lemon	8.7 cm	43 g	Baby can squint, frown, and grimace
15	Apple	10.1 cm	70 g	Bones becoming visible on ultrasound; taste buds forming
16	Avocado	11.6 cm	100 g	Baby can make sucking motions; eyes are sensitive to light
17	Pear	13.0 cm	140 g	Skeleton changing from cartilage to bone; sweat glands forming
18	Bell pepper	14.2 cm	190 g	Baby can yawn and hiccup; ears reach final position
19	Mango	15.3 cm	240 g	Vernix caseosa coating forms; sensory development accelerates
20	Banana	25.6 cm	300 g	Halfway point; baby measured head to toe now
21	Carrot	26.7 cm	360 g	Baby can taste amniotic fluid; eyebrows and eyelids present
22	Papaya	27.8 cm	430 g	Lips and eyelids more distinct; eyes formed but iris lacks colour
23	Grapefruit	28.9 cm	500 g	Baby can hear sounds outside the womb; lungs developing
24	Corn on the cob	30.0 cm	600 g	Taste buds fully formed; brain growing rapidly
25	Cauliflower	34.6 cm	660 g	Baby responds to familiar voices; skin is becoming opaque
26	Lettuce head	35.6 cm	760 g	Eyes begin to open; lungs producing surfactant
27	Cabbage	36.6 cm	875 g	Baby can recognise your voice; sleep cycles emerging
28	Eggplant	37.6 cm	1005 g	Third trimester begins; baby can blink and dream (REM sleep)
29	Butternut squash	38.6 cm	1150 g	Bones are fully developed but still soft; muscles maturing
30	Cucumber	39.9 cm	1320 g	Baby can grasp firmly; red blood cells forming in bone marrow
31	Coconut	41.1 cm	1500 g	Brain connections forming rapidly; baby processes information
32	Jicama	42.4 cm	1700 g	Toenails and fingernails have grown in; practice breathing
33	Pineapple	43.7 cm	1920 g	Bones hardening; skull remains flexible for delivery
34	Cantaloupe	45.0 cm	2150 g	Lungs and nervous system continue maturing
35	Honeydew melon	46.2 cm	2380 g	Kidneys fully developed; liver can process waste
36	Romaine lettuce	47.4 cm	2620 g	Baby is gaining about 28g per day; dropping into pelvis
37	Swiss chard bunch	48.6 cm	2860 g	Considered early term; baby practises breathing movements
38	Leek	49.8 cm	3080 g	Organ systems are mature; baby continues to build fat
39	Watermelon	50.7 cm	3290 g	Full term; brain and lungs continue to mature
40	Pumpkin	51.2 cm	3460 g	Due date week; baby is ready for birth
41	Pumpkin +	51.5 cm	3600 g	Post-term; healthcare provider may discuss induction
42	Pumpkin ++	51.7 cm	3700 g	Late post-term; medical monitoring recommended

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