When Does A Baby Start Developing Arms And Legs?

Baby Developing Arms And LegsSource: bing.com

As a new mom, you must be excited to see your little one grow and develop. One of the most exciting things to witness is how your baby starts to develop arms and legs. But when does this happen exactly?

The Beginning of Life

The development of a baby’s limbs starts at the very beginning of life. When you conceive, your baby is an embryo in the first few weeks. During this time, the cells in the embryo begin to divide and differentiate. The cells that will become the arms and legs are already present in the embryo, but they are not yet visible.

Week 4 to Week 7

During weeks 4 to 7 of your pregnancy, your baby’s arms and legs start to take shape. At week 4, the arm and leg buds begin to sprout out from the developing embryo. By week 5, the arm buds have grown longer and form paddle-shaped hands. Similarly, the leg buds also grow longer and form footplates. By week 6, the fingers and toes start to appear, and the arms and legs are more defined.

Week 8 to Week 12

By week 8, your baby’s arms and legs are fully formed, and they are moving, although you cannot feel it yet. The hands and feet have separated from the paddle-shaped limbs, and the fingers and toes are more defined. By week 12, your baby’s arms and legs are long enough to touch each other in front of the body. The baby can now make fists and kick.

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Week 13 to Week 16

During weeks 13 to 16, your baby’s arms and legs continue to develop. The bones in the arms and legs become harder, and the muscles become stronger. Your baby can now move its limbs more forcefully, and you might be able to feel the movements.

Week 17 to Week 20

By week 17, your baby’s arms and legs are in proportion to the rest of the body. The movements become more coordinated, and your baby can now grasp and release objects. By week 20, your baby can open and close its fists and has more control over its limbs. You might be able to see your baby moving around during an ultrasound.


In conclusion, the development of a baby’s arms and legs is a fascinating process that starts at the very beginning of life. From week 4 to week 20, your baby’s limbs grow and become more coordinated, and your baby can move them more forcefully. Watching your baby develop and grow is an amazing experience that every parent should cherish.

If you have any concerns about your baby’s development, do not hesitate to talk to your doctor or pediatrician.

Frequently Asked Questions

Q: When can I feel my baby’s movements?

A: You might be able to feel your baby’s movements by week 16 to week 20 of your pregnancy. However, this can vary from woman to woman, and some women might not feel anything until later.

Q: Can my baby’s movements harm me?

A: No, your baby’s movements cannot harm you. In fact, feeling your baby move is a sign that your baby is healthy and active.

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Q: What should I do if I am not feeling my baby move?

A: If you are not feeling your baby move, try drinking something cold or sugary and lying on your left side. If you still do not feel any movement, contact your doctor or midwife.

Q: Can my baby’s movements predict the gender?

A: No, your baby’s movements cannot predict the gender. The gender of your baby is determined by the chromosomes from the sperm and egg at conception.

Q: When can my baby start crawling?

A: Most babies start crawling between 6 to 10 months of age, although some babies might start earlier or later. Crawling is an important milestone in your baby’s development and helps strengthen the muscles, improve coordination, and develop independence.

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By administrator

I am a child development specialist with a strong passion for helping parents navigate the exciting and sometimes challenging journey of raising a child. Through my website, I aim to provide parents with practical advice and reliable information on topics such as infant sleep, feeding, cognitive and physical development, and much more. As a mother of two young children myself, I understand the joys and struggles of parenting and am committed to supporting other parents on their journey.

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