Jelly roll material consumption calculator and Jelly-Roll rug visual designer.

Download here


*the JellyCalc is currently available for direct download only. That means you save it to your home screen by clicking the button. Learn how to save it HERE.

Mobile phone app only

Calculate how much fabric or jelly roll strips you need for your Jelly-Roll rug!
Simply put in your rug dimensions and let the calculator do the rest!

How does the Jelly-Roll rug calculator work?

The JellyCalc app is gaining popularity among crafters and Jelly Roll Rug (JRR) makers. In fact, it's even recommended by some of the biggest names in the JRR community, including Amanda Mateo from UniquelyMateo and Roma Lambson, the creator of the JRR pattern herself.


"Let's cover the world with Jelly-Roll Rugs made with Love!" (Roma Lambson, Designer of the Jelly-Roll Rug)

And what do our fellow JRR makers say about this app?

"My first jelly roll rug & my first use of jelly calc! "

"Love it! No more guessing on rug sizes, or how much fabric to cut! Thank you!"

"So much quicker and easier!"

"So much easier than guessing what I need for strips"

"Absolutely love this app!"

"What a life saver. thank you. Less stress"

"Love it!"

"This is a total game changer!"

"Love ❤️ it"

"Easy to use and is definitely worth the subscription. Just hard to find in my phone sometimes."

"This app has been very helpful"

"❤️❤️❤️ love it!!"

"Just got it but so far so good!"

"Love the calculator feature this is great for figuring out how many strips are needed and even layout "

"I love it, especially with the new feature that calculates the staring strip"

"it’s great. love the new feature. no guessing!!"

"I really like the app but would love to know how to figure out how long to make my center strip to get the dimensions I want "

"It’s great since I cut my own strips "

"Love that the strip count can tell me exactly how much fabric I need and how many to cut. my number one issue is trying to figure the first tube length needed. I usually end up ripping out a whole rug or mat to make the proper length. "

"This takes the guess work out of it! thank you!"

"Exactly what I needed. Thank you "

"Love it, but on oval rugs it does’t give you the tube length of the center tube before you bend it over and place a pin to start sewing in relationship to the size of the oval rug you are making"

"It’s great"

"Love it!"

"So easy to use!"

"Love this!"

"Accurate and easy to use!!"

"Takes all the guessing away"

"Wonderful, thank you so much"

"Easy to use"

"Very easy to use"

"Wow this is a game changer"

"It would be nice if it gave me how many yards of fabric to buy. But, it does let me know how many straps I will need so I can figure out how much I will need. thank you."

"Love it!"

"Great!"

Download the JellycCalc app today!

Show off your Jelly-Roll Rugs!

Send us your JRRs to get featured on the website!
send your photos to: support@jellycalc.com

Zuzana, creator of the JellyCalc app

Hi, I’m Zuzana, and I’m the creator of the JellyCalc app.

For as long as I can remember, I’ve had a passion for crafting. What started as a love for the craft has grown into a way for me to blend creativity and practicality, using cord and rope as my medium for artistic expression. In 2016 I started transforming simple cords into beautiful, handmade creations and teaching sewing courses. 

As the founder of the Cord Craft Academy, I teach a wide range of cord-related techniques. It was this passion for both teaching and crafting that led me to create JellyCalc—an app designed to simplify the process of designing your Jelly Roll rugs.

Sewing, especially making Jelly Roll rugs, has been one of my greatest passions for years. Like many of you, I’ve spent countless hours working out the calculations to ensure everything fits perfectly. That’s exactly why I created this app—to take the guesswork out of the process and make it easier for all of us to create beautiful rugs.

Thank you for being part of this journey. Now, it’s time to get creative and make something beautiful!

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Do you have any questions? Email us at: support@jellycalc.com