Pregnancy is an amazing time. Hello, you literally grow a new person in 40 weeks! From a teeny-tiny, pinhead-sized blip to a full-size newborn, it’s a truly remarkable and awe-inspiring feat. To help you visualize your baby’s weekly growth, it’s helpful to compare your baby’s size to something familiar, like the fruits and vegetables you see regularly at the grocery store. It’s so exciting to see your baby change from a tiny embryo the size of a blueberry to a nearly-here baby the size of a watermelon!
One thing to note: although we use the word baby in each week here, you may see others (medical professionals, prenatal websites) use more specific terms to refer to your developing baby at the different stages of pregnancy. Through week 10, the medical term for your baby is embryo. After week 10, an embryo graduates to become a fetus.
Another term to know is crown-to-rump. Crown refers to the top of your baby’s head, and rump to the bottom of the buttocks. Doctors and ultrasound technicians use the crown-to-rump measurement to track the baby’s size in the early weeks when s/he is curled into a C shape. You’ll hear the crown-to-rump measurement being used through about 14 weeks gestation.
Are you ready to see how big your baby is now, compared to the fruits and veggies in your grocery store? Click on your current pregnancy week, or scroll down this guide to see how your baby’s growth will progress as the weeks go on.
4 Weeks Pregnant
![poppy seeds, which are the same size of a 4 week old embryo in a pregnant mom]()
At four weeks, your baby is as big as a poppy seed, and .04 inches long.
5 Weeks Pregnant
![a pile of rice grains, which are the same size of a 5 week old embryo in a pregnant mom]()
At five weeks, your baby is the size of an orange seed or a grain of rice, between .05 and .10 inches long.
6 Weeks Pregnant
![pomegranate seeds, which are the same size of a 6 week old embryo in a pregnant mom]()
At six weeks, your baby is between .167 and .2 inches crown-to-rump. That’s the size of a pomegranate seed.
7 Weeks Pregnant
![a bowl of blueberries, which are the same size of a 7 week old embryo in a pregnant mom]()
At seven weeks, your baby is the size of a blueberry and about .3 inches.
8 Weeks Pregnant
![raspberries, which are the same size of a 8 week old embryo in a pregnant mom]()
At eight weeks, your baby is the size of a raspberry, measuring .5-.6 inches.
9 Weeks Pregnant
![green olives, which are the same size of a 9 week old embryo in a pregnant mom]()
This week, your baby’s size is the equivalent of a medium green olive, measuring about .6-.7 inches crown-to-rump and weighing .12 ounces.
10 Weeks Pregnant
![prunes, which are the same size of a 10 week old embryo in a pregnant mom]()
At 10 weeks, your baby is the size of a prune, measuring 1 inch from crown-to-rump. His or her weight is about .18 ounces.
11 Weeks Pregnant
![limes, which are the same size of an 11 week old embryo in a pregnant mom]()
At 11 weeks, your baby is the size of a small lime. His or her crown-to-rump measurement is 2 inches, and weight is .33 ounces.
12 Weeks Pregnant
![kiwi fruit, which are the same size of a 12 week old embryo in a pregnant mom]()
At 12 weeks, your baby is the size of a small kiwi fruit. S/he weighs .5 ounces and measures 2.5 inches from crown-to-rump.
13 Weeks Pregnant
![plums, which are the same size of a 13 week old embryo in a pregnant mom]()
At 13 weeks, your baby is the size of a plum, about 3 inches long and weighing around .8 ounces.
14 Weeks Pregnant
![peaches, which are the same size of a 14 week old embryo in a pregnant mom]()
At 14 weeks, your baby is the size of a peach, 3.5 inches long and weighing 1.5 ounces.
15 Weeks Pregnant
![navel oranges, which are the same size of a 15 week old embryo in a pregnant mom]()
At 15 weeks, your baby is the size of a navel orange, measuring 4 inches and weighing in at 2.5 ounces.
16 Weeks Pregnant
![avocado, which are the same size of a 16 week old embryo in a pregnant mom]()
At 16 weeks, your baby is about 4.5 inches in length and weighs about 3.5 ounces, making him or her comparable in size to an avocado.
17 Weeks Pregnant
![pears, which are the same size of a 17 week old embryo in a pregnant mom]()
At 17 weeks, your baby is the size of a pear. S/he is 5 inches in length and weighs about 5 ounces.
18 Weeks Pregnant
![tomatoes, which are the same size of a 18 week old embryo in a pregnant mom]()
At 18 weeks, your baby is 5.5 inches in length and about 6.5 ounces in weight. S/he is the size of a tomato.
19 Weeks Pregnant
![mangoes, which are the same size of a 19 week old embryo in a pregnant mom]()
At 19 weeks, your baby is the size of a mango. S/he is 6 inches long and weighs about 8.5 ounces.
20 Weeks Pregnant
![sweet potato, which are the same size of a 20 week old fetus in a pregnant mom]()
Halfway there! At 20 weeks, your baby is the size of a sweet potato, measuring at 6.5 inches long and weighing 10 ounces on average.
21 Weeks Pregnant
![carrots, which are the same size of a 21 week old fetus in a pregnant mom]()
At 21 weeks, your baby is the length of a carrot, measuring about 9 inches long and weighing 13 ounces.
22 Weeks Pregnant
![red peppers, which are the same size of a 22 week old fetus in a pregnant mom]()
At 22 weeks, your baby is the size of a red pepper. S/he measures 10 inches long and weighs around 15 ounces on average.
23 Weeks Pregnant
![tomatoes, which are the same size of a 23 week old fetus in a pregnant mom]()
At 23 weeks, your baby is the size of a banana, measuring a little over 11 inches long and weighing a little over a pound on average.
24 Weeks Pregnant
![pomegranates, which are the same size of a 24 week old fetus in a pregnant mom]()
At 24 weeks, your baby measures about 12 inches long and weighs on average 1.3 pounds. S/he is the size of a pomegranate.
25 Weeks Pregnant
![bananas, which are the same size of a 25 week old fetus in a pregnant mom]()
At 25 weeks, your baby is the size of an eggplant. S/he measures 13.5 inches long and weighs 1.5 pounds on average.
26 Weeks Pregnant
![acorn squashes, which are the same size of a 26 week old fetus in a pregnant mom]()
At 26 weeks, your baby is the size of an acorn squash, measuring 14 inches long and weighing nearly 2 pounds on average.
27 Weeks Pregnant
![cabbage, which are the same size of a 27 week old fetus in a pregnant mom]()
At 27 weeks, your baby is the size of a cabbage, measuring 14.5 inches long and weighing about 2 pounds.
28 Weeks Pregnant
![lettuce, which are the same size of a 28 week old fetus in a pregnant mom]()
At 28 weeks, your baby is the size of a head of lettuce. S/he measures around 15 inches long and weighs about 2.25 pounds.
29 Weeks Pregnant
![cauliflowers, which are the same size of a 29 week old fetus in a pregnant mom]()
At 29 weeks, your baby is the size of a head of cauliflower, measuring 15.5-16 inches long and weighing 2.5-3 pounds on average.
30 Weeks Pregnant
![broccoli, which are the same size of a 30 week old fetus in a pregnant mom]()
At 30 weeks, your baby measures about 16 inches long and weighs about 3 pounds. S/he is the size of a bunch of broccoli.
31 Weeks Pregnant
![coconut, which are the same size of a 31 week old fetus in a pregnant mom]()
At 31 weeks, your baby is the size of a coconut. S/he measures about 16.2 inches long and weighs on average 3.2 pounds.
32 Weeks Pregnant
![Cantaloupe, which are the same size of a 20 week old fetus in a pregnant mom]()
At 32 weeks, your baby is the size of a cantaloupe. Your little weighs about 3.5-4 pounds and measures about 16.7 inches in length.
33 Weeks Pregnant
At 33 weeks, your baby is about 17 inches long and weighs about 4.25 pounds. That’s the size of a butternut squash.
34 Weeks Pregnant
![pineapple, which are the same size of a 34 week old fetus in a pregnant mom]()
At 34 weeks, your baby is the size of pineapple. S/he measures about 17.7 inches long and weighs 4.7 pounds on average.
35 Weeks Pregnant
![honeydew melons, which are the same size of a 35 week old fetus in a pregnant mom]()
At 35 weeks, your baby is the size of a honeydew melon. S/he is about 18 inches long and 5.25 pounds in weight.
36 Weeks Pregnant
![bunch of kale, which is the same size of a 36 week old fetus in a pregnant mom]()
At 36 weeks pregnant, your baby is as big as a bunch of kale. S/he weighs around 6 pounds and is about 18.5 inches in length.
37 Weeks Pregnant
![papaya, which are the same size of a 37 week old fetus in a pregnant mom]()
At 37 weeks, your baby weighs about 6.5 pounds and measures 19 inches in length. S/he is the size of a papaya.
38 Weeks Pregnant
![winter melon, which are the same size of a 38 week old fetus in a pregnant mom]()
At 38 weeks, your baby is the size of a winter melon, weighing in at around 7 pounds and measuring 19.5 inches on average.
39 Weeks Pregnant
![pumpkins, which are the same size of a 39 week old fetus in a pregnant mom]()
At 39 weeks, your little is as big as a pumpkin. S/he weighs around 7.3 pounds and measures about 20 inches in length.
40 Weeks Pregnant
![watermelons, which are the same size of a 40 week old fetus in a pregnant mom]()
Congratulations, you made it, mama! At 40 weeks, your little is as big as a watermelon (or newborn baby!). S/he measures about 20 inches and weighs around 7.5 pounds on average.