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How Big Is My Baby This Week?

From a tiny poppy seed to a snuggly pumpkin, here is exactly how big your baby is at every week of pregnancy. Slide to your week, or pop in your due date, and watch your little one grow.

Week 12
Your baby at week 12 is about the size of a lime
First trimester

At week 12, your baby is about the size of a

lime

Week 428 weeks to goWeek 40
Length2.1 in
Weightabout 14 g
Trimester1

Reflexes are developing; baby may open and close their fingers.

Book your prenatal visit with Garden OB/GYN

General guidance from the NHS week-by-week guide and MedlinePlus (NIH). Please always check with your provider.

Baby Size Week by Week

Every week of your pregnancy as a fruit or veggie you can picture, drawn to scale so you can watch the growth. Tap any week for the full guide.

Week 4: about the size of a poppy seedWk 4poppy seedWeek 5: about the size of a apple seedWk 5apple seedWeek 6: about the size of a sweet peaWk 6sweet peaWeek 7: about the size of a blueberryWk 7blueberryWeek 8: about the size of a kidney beanWk 8kidney beanWeek 9: about the size of a cherryWk 9cherryWeek 10: about the size of a strawberryWk 10strawberryWeek 11: about the size of a figWk 11figWeek 12: about the size of a limeWk 12limeWeek 13: about the size of a lemonWk 13lemonWeek 14: about the size of a peachWk 14peachWeek 15: about the size of a navel orangeWk 15navel orangeWeek 16: about the size of a avocadoWk 16avocadoWeek 17: about the size of a pearWk 17pearWeek 18: about the size of a bell pepperWk 18bell pepperWeek 19: about the size of a heirloom tomatoWk 19heirloom tomatoWeek 20: about the size of a bananaWk 20bananaWeek 21: about the size of a carrotWk 21carrotWeek 22: about the size of a papayaWk 22papayaWeek 23: about the size of a grapefruitWk 23grapefruitWeek 24: about the size of a ear of cornWk 24ear of cornWeek 25: about the size of a acorn squashWk 25acorn squashWeek 26: about the size of a head of lettuceWk 26head of lettuceWeek 27: about the size of a cauliflowerWk 27cauliflowerWeek 28: about the size of a eggplantWk 28eggplantWeek 29: about the size of a butternut squashWk 29butternut squashWeek 30: about the size of a cabbageWk 30cabbageWeek 31: about the size of a coconutWk 31coconutWeek 32: about the size of a squashWk 32squashWeek 33: about the size of a pineappleWk 33pineappleWeek 34: about the size of a cantaloupeWk 34cantaloupeWeek 35: about the size of a honeydew melonWk 35honeydew melonWeek 36: about the size of a romaine lettuceWk 36romaine lettuceWeek 37: about the size of a a bunch of chardWk 37a bunch of chardWeek 38: about the size of a leekWk 38leekWeek 39: about the size of a mini watermelonWk 39mini watermelonWeek 40: about the size of a small pumpkinWk 40small pumpkin
First trimesterSecond trimesterThird trimesterDrawn to scale by length · tap a week for the full guide

Common Questions

How big is my baby right now?

Use the calculator above: enter how many weeks pregnant you are (or your due date) and you will see the fruit or veggie comparison, approximate length, and approximate weight for your exact week of pregnancy.

Why is baby size compared to fruit and veggies?

Fruit and vegetable comparisons make it easy to picture how much your baby has grown each week, from a poppy seed at week 4 to a small pumpkin at week 40. They are friendly estimates, not exact medical measurements.

Are these baby sizes accurate?

They are widely-cited averages. Every baby grows at their own pace, so your baby may measure a little larger or smaller. Your Garden OB/GYN provider tracks your baby’s growth with ultrasound and fundal-height measurements at your prenatal visits.

When should I start prenatal care?

As soon as you know you are pregnant, ideally in the first 8 weeks. Early prenatal care helps keep you and your baby healthy. You can book a visit with Garden OB/GYN at our Brooklyn, NYC, and Long Island locations.

About this tool

General guidance drawn from the NHS week-by-week guide and MedlinePlus (NIH). It is not medical advice, and every pregnancy is different, so please always check with your provider. See our full medical disclaimer.

Expecting in Brooklyn or beyond?

Garden OB/GYN provides warm, expert prenatal care across Brooklyn, NYC, and Long Island. We would love to care for you and your growing baby.

Book your prenatal visit