Available on iOS & Android

Plan. Sew. Create.With accuracy.

The world’s first Jelly‑Roll Rug Calculator & Designer.

App card: design before you sew, oval rug preview with dimensions

App card: exact material calculations, 40 of 160 strips used, Amethyst Collection swatches

App card: 300+ real precuts with fabric swatches

by Moda, Riley Blake Designs, Tinyspool and others

JellyCalc app on a phone showing an amethyst oval rug design

4.8 stars: Loved by Jelly-Roll rug makers
8,000+ makers: A growing creative community
300+ precuts: Real collections from leading brands
iOS + Android: Plan your next rug anywhere

Maker recommended

Recommended byAmanda of Uniquely Mateo.

Amanda Mateo — one of the best-loved teachers in the Jelly‑Roll Rug community — recommends JellyCalc to her makers. Watch her introduce the app and see how she plans a rug before cutting a single strip.

Uniquely Mateo on YouTube

JellyCalc Calculator

Know exactlywhat you need.

Enter your rug dimensions and strip size. JellyCalc works out the material, strip count and starting length for you.

Plan oval or round rugs in inches or centimetres.
See how many strips and how much fabric to prepare.
Start sewing with the numbers already settled.

Calculate with confidence

JellyCalc jelly-roll rug calculator app on a phone, a handwritten note saying “Quick calculations for amazing creations!!” and a finished purple oval jelly-roll rug

Choose.
Arrange.
Make it yours.

JellyCalc jelly-roll rug designer app on a phone: zoomed amethyst oval rug design built from real Amethyst Garden fabric strips

JellyCalc Designer

Design it beforeyou sew it.

Build a true-to-fabric mockup using hundreds of real Jelly‑Roll precuts. Try the order, reverse it and see how your finished rug can look.

Browse 300+ real collections and fabric strips.
Arrange automatically or refine your rug strip by strip.
Save your designs and compare ideas before cutting.

From first idea to confident first stitch

Simple by design

From dimensionsto done.

A clear path from the rug in your imagination to the rug under your feet.

01
Enter your rug size
Choose your shape, units, finished width and finished length.
02
Get the exact numbers
See your material, strip count and starting length at a glance.
03
Design, sew, enjoy
Preview the layout, prepare with confidence and bring it to life.

Real maker reviews

Less guessing.More creating.

4.8 stars

based on 133 reviews from the previous version of the app before the Google Play and App store launch.

Over 8 000 users

“Absolutely awesome. I just made my first Jelly-Roll rugs and I'm hooked! This looks like a miracle.”
Verified app review
“No more guessing on rug sizes or how much fabric to cut. Thank you!”
JellyCalc maker
“This takes all the guesswork out of making rugs. Exactly what I was looking for.”
JellyCalc maker
“It is great and very accurate!”
Verified app review
“Love this new app. Thank you for creating this!”
Verified app review
“What a great app! Calculates the amount needed for the size rug you want to make, taking the guesswork out of it!”
Verified app review
“I absolutely love it!! 💗”
Verified app review
“I use this app every time I make a new rug. Love it!”
Verified app review
“Great product, thank you! None of the videos I watched explained how to figure the size of rug. This worked perfectly.”
Verified app review
“I just love this calculator, no more guessing. Now I wish there was a calculator for the rectangular rugs.”
Verified app review
“Love that you can calculate how many strips you need to use.”
Verified app review
“So much easier than guessing what I need for strips.”
Verified app review
“What a life saver. Thank you. Less stress.”
Verified app review
“This is a total game changer.”
Verified app review
“❤️❤️❤️ love it!!”
Verified app review
“Easy to use and is definitely worth the subscription.”
Verified app review
“Love the calculator feature — great for figuring out how many strips are needed and even layout.”
Verified app review
“I love it, especially with the new feature that calculates the starting strip.”
Verified app review
“This takes the guess work out of it! Thank you!”
Verified app review
“Exactly what I needed. Thank you.”
Verified app review