21 Awesome Harry Potter Science Experiments to Try With Your Kids

21 of the Best Science Experiments for Harry Potter Fans

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Even muggles can enjoy these Harry Potter science activities. Create your own potions class, explore magical creatures, or enjoy some herbology. You can even try your hand at charms and transfiguration! These magical experiments are perfect for use at home or in the classroom. They also make great Harry Potter party ideas. Click through for the instructions. Wands are optional.

Do you remember the day your family discovered Harry Potter? We discovered it just after the first book was published. I took one look at the description and knew it would be a hit.

I gave it to my oldest and watched as he vanished into the magical world of Hogwarts. Don’t you just love it when your kids are so engrossed in a book, they don’t want to do anything else?

It wasn’t long before the whole family was hooked.  The books are brilliant ! Most kids love Harry Potter, so why not use that interest to create some magic of your own? I’ve gathered together 21 Harry Potter Science activities that will entrance your family and get them excited about science.


Almost every kid you meet dreams of living in the world of Harry Potter. OK, I know what you’re thinking, most adults wish that they could become students at Hogwarts. Wouldn’t it be great to learn all the secret knowledge available there?

And guess what? I have some great news.  You CAN do experiments with your kids that seem downright magical, and I’ve collected some great ones.

  • Looking to learn about Potions?
  • Always wanted to take a Care of Magical Creatures?
  • Ready to try your hand at Transfiguration?
  • Want to channel your inner Ron and dabble in Herbology?
  • Need some Harry Potter party ideas?

We’ve got you covered. Try these Harry Potter science experiments today. Maybe you can convince your kids that you really are a part of the Wizarding World!


Harry Potter Potions Class


Let’s dive in with a Harry Potter Potions class.

  1. This magical experiment transforms the color of liquid right before your kids eyes. It’s not quite as transformative as Polyjuice potion, but it is still pretty cool. Kids LOVE this experiment.  Acids and Bases Experiment Exploring pH Levels by Steam Powered Family.
  2. This fun learning activity is perfect for younger kids. It would be a great party activity for a group. The bigger the variety of “potion ingredients” available, the better.  Harry Potter Potion’s Class Science Activity by The Imagination Tree.
  3. I don’t think the Harry Potter books ever told us the spell for creating rainbows. Still this potion does it beautifully! You can use Skittles or M&Ms, and the beautiful rainbows you will create are magical! Easy Rainbow Skittles Science Experiment by Fun With Mama


  1. At Hogwarts, Herbology students learn about large plants – and tiny ones (like fungus), too. Invite your kids to collect fungus breath. Combine yeast and sugar and watch the balloon inflate before your eyes. It is magical. I tried this with a group of tweens and they seriously impressed! Sugar and Yeast Balloon Experiment by Happy Brown House
  2. Learning how plants grow and take in water is an important part of Herbology. This magical experiment offers students a chance to SEE how flowers absorb water. It is also truly beautiful! Color Changing Flowers Science Experiment by Messy Little Monster
  3. One of the most magical things each year is when the trees change colors for Autumn. This experiment teaches kids all about chlorophyll. Learn how mother nature makes trees look completely different in the Fall. She does it without even needing a magic wand! Easy Fall Leaf Science Experiment For Kids by A Little Pinch Of Perfect
  4. Hogwarts may be fictional, but science is not. Let the magic of plants comes to life with this Herbology experiment. Put into the right environment, even a hard and stone-like pinto bean can sprout into life. Watch the magic unfold right before your very eyes!  Growing a Bean in a Bag by Science Kiddo


  1. Hagrid loved his spider friends. These spiders may not be as huge as Aragog, bu they are still magical. This spider web activity teaches kids about the wonderful knowledge of spiders. These important arachnids eat many dangerous and annoying insects on the planet. They are also incredibly sensitive and perceptive and worthy of our respect. Spider Web Science Activity by Buggy And Buddy
  2. Make these gummy worms come alive with science. All you need is some baking soda and vinegar. Dancing Frankenworms from Playdough to Plato
  3. Have you ever wondered why spiders don’t stick to their own webs the way other insects do? This friendly video is a great way to learn. Discover more about spiders so we can take proper care of these magical creatures in our own lives.
  4. Your kids can’t really adopt a jellyfish, but they can learn all about these magical creatures and how they live. This discovery bottle is a great way for kids to create their own imaginary – and completely safe – jellyfish! Jellyfish Discovery Bottle by Steamsational
  5. This super cool experiment illustrates how fish swim. Did you know that they can also raise and lower themselves in water? They don’t even need a levitation charm to do it! Diving Fish Science Experiment by Steamsational

Related:  11 Magical Science Experiments You Can Do With Your Kids


  1. Professor McGonagall warned that Transfiguration can be dangerous. Still there is no need to be afraid of this heat sensitive slime. Kids will love seeing how heat and cool effect the color of their slime in wonderful ways! Be honest! It is very impressive.
    Heat Sensitive Color Changing Slime by Left Brain Craft Brain
  2. One of my favorite experiments has always been to see what happens to an egg when you soak it in vinegar. (Hint: Vinegar dissolves the shell, leaving only the membrane, which is soft and rubbery.) This experiment goes one step further. Make those soft and rubbery eggs glow in a way that seems straight out of Transfiguration class. Magic Glowing Egg by Paging Fun Mums
  3. This experiment quickly transforms cream (and a few other things) into ice cream. And it’s a delicious way to enjoy some ice cream. Kids love seeing how the simple ingredients “Transfigure” into a tasty treat! How to Make Ice Cream in a Bag by Rediscovered Families
  4. Can you cast a spell on milk? Not exactly. But you can transform it into a beautiful canvas with the help of chemistry. Chemical reactions allow us muggles to transform one thing into another. They also make for great hands-on learning! Magic Milk Chemistry For Kids by Little Bins For Little Hands
Harry Potter science experiments


  1. This magical science trick takes a little time and effort to set up, but the results are well-worth it. The Revelio Charm (and a little bit of water) reveal the words under their glass. The best part? Science explains exactly how the magic occurs Revelio Charm – A Science Magic Trick For Kids by Babble Dabble Do
  2. With a simple wave of your magic wand, you can make a feather float right before a child’s eyes. Just make sure you pronounce “Wingardium Leviosa” correctly. And when you explain that the secret is a paperclip and a magnet, they’ll learn one more reason why science is magic! Wingardium Leviosa Science Experiment For Kids by Steam Powered Family
  3. Static electricity is another magical force. Try these amazing experiments and your students or kids will think so, too. These would make great party tricks, especially for a Harry Potter themed party. Don’t forget to dress up like Professor Flitwick!
  4. This fun experiment gives your kids a chance to be creative as they make beautiful paper flowers. But when they see their pretty flowers BLOOM, the looks on their faces will have YOU completely charmed! Blooming Paper Flowers Experiment by Teach Beside Me
  5. Make a pen spin around by itself. The magic in this trick is provided by magnets. Isn’t it amazing? This one really impresses kids.

Are you ready to have some magical science fun with your kids? Need some Harry Potter science activities for a party? Want to impress your students? These experiments are sure to be a hit. If you try any of them, we’d love to hear how it goes!

Harry Potter Science Experiments