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How To Handle Every Bias Challenge With Ease Using These bias calculator, formula and cheat sheet

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Trying to figure out how much fabric you need to make your bias tape? Or maybe you need a binding calculator to find how much bias your fabric yields? This simple bias calculator is super helpful, coming with the detailed formula and a handy dandy continuous bias binding chart to make your life even more easy!

Bias Calculator

Bias binding calculator

Now that you know how to make your own bias tape without a bias maker and how to create miles of continuous bias binding it’s time to learn how to calculate how much fabric you need to make a certain amount of bias tape and also how much bias binding your fabric will make. This bias calculator is super easy to use and very handy, making your sewing projects a lot faster and easier.

Bias binding series

This bias calculator comes with the actual formula and a very easy to use and helpful continuous bias binding chart to figure out your bias needs in a blink of an eye! The formula in my bias binding calculator will help you figure out how much fabric you will get from yardage from fabric square and how much bias you get from the fabric you own.

So with this cool bias tape tape calculator you won’t be left approximating but you’ll be able to determine exactly how much bias is needed for your quilt or sewing project and also how much fabric is needed to create that continuous bias strip needed to finish your project. This way you will not end up buying too much or too little fabric when going to the fabric store.

I totally understand how this math thing seems like such a bugger but honestly, sewing and quilting require a great deal of math so we better get used to the idea, learn this bias calculator by heart and simply move over! Sewing will be so much more enjoyable once you get pass this point.

But no worries! If my continuous bias binding calculator is just not your cup of tea, you can always refer to my bias binding cheat sheet.

Tu sum it all up, in this tutorial you will find a bias calculator formula, bias calculator excel file (where you can insert your own measurements and the file will automatically calculate the bias for you) and a bias tape chart for the most common bias.

Purchase the calculator formulas and the cheat sheet here!


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Bias binding calculator

Binding calculator

Continuous Bias Formulas

With these formulas, calculate the amount of fabric needed, through a few different ways.

From yardage:

Bias length x Bias width = Square inches needed / Width of fabric = Amount of fabric in inches / 36 = Fabric in yards

Example: Bias length = 60″
               Bias width = 2″
               Fabric width = 60″
60×2=120/60=2/36=0.05 yardage

From fabric square

Bias length x Bias width = Square inches needed / Square root = Fabric in inches (round up to 1″)

Example: Bias length = 60″
               Bias width = 2″
60×2=120/10.95=10.95″ (11″)

How much bias fabric yields

Fabric length x Fabric width / Bias width = Amount of bias in inches (round up to 1″)

Example: Fabric length = 20″
               Fabric width = 20″
               Bias width = 2″

Purchase the PDF formulas here!

Pin the formulasContinuous bias formulas

Continuous Bias Binding Excel Calculator

In order to be able to use the file, download it to your computer first.

Please note the excel file is super easy to use but make sure you enter your figures in the blue boxes only and read the results in the green boxes. I’ve protected all cells except for the blue cells to make it safer to use the file, but just in case the protection is not working, please bare in mind to only use the blue cells. If an accident happen and you end up inserting your measurements in the green boxes simply press “Undo”.

Also let me know if you’re having troubles accessing the file through the link below. This is the first time I’m sharing files via this method!

Purchase the calculator here!

Pin the bias calculator

Continuous bias calculator

Continuous Bias Tape Cheat Sheet

Don’t you like using the excel calculator? Or maybe you need something you can slip in your bag when you go shopping for fabric? Then I’ve got a guide for you. This cheat sheet allows you to calculate any amount of tape from 1 to 5 inches wide and from 12 to 120 inches long. Pin and print this table next to your sewing machine!

Purchase the cheat sheet here!

Pin the bias guide

Continuous bias tape cheat sheet

I hope you enjoyed my bias calculator tutorial. If you get to use either one of the formulas, the excel file or the cheat sheet and find them useful I’d love to know so please leave a comment below.

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Bias calculator

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about petro


Hi, I’m Petro, author and founder of Easy Peasy Creative Ideas. Sewist, crafter, avid DIY-er, foodie, photographer, homemaker and mommy to one. I’m an expert at coming up with quick, clever sewing tips, recycling crafts and simple, easy recipes! You can find my ideas featured in reputable publications such as Country Living, Good House Keeping, Yahoo News, WikiHow, Shutterfly, Parade, Brit & Co and more. Thanks for stopping by and hope you’ll stay for a while, get to know me better and come back another time. Stick around for real fun projects! Read more…

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  1. Hi, I’m interested in the bias tape calculator but I can’t seem to find the link to join the newsletter. Marcia

    1. Hi Marcia! Thanks for your interest in my project. The sign up form is right within the article or you might get a pop up after scrolling the page for about 15 seconds.