Yarn Calculator – Calculate How Much Yarn You Actually Need 🧮🧶

Yarn Calculator - Calculate How Much Yarn You Actually Need 🧮🧶
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If you’re looking for a simple way to calculate the amount of yarn or skeins needed for any project, then look no further. I have the perfect tool that will help measure each stitch and more. 



A yarn calculator is a great tool that will save you a lot of time and money when purchasing your next batch of yarns for that new project. It will help give you an estimate of how much yardage you would actually need. It is easy to use and it’ll save you numerous trips to the store or online (shopping!).

First of all, you will need to know what you will be working on. Let’s say you wanted to make a summer tank top and you already have the written pattern for it. Most written patterns will provide you with the number of skeins required, however…

crochet patterns & yarn

Let’s say you wanted to use a different yarn or a different hook size, or you wanted to make the length longer or wider, then this will change the entire gauge and the amount of yarn required.

A yarn calculator will be able to streamline these calculations for you. By inputting relevant information such as metric type, length, stitches & rows needed, this yarn calculator will be able to generate an (almost) accurate estimate.

Overall, a yarn calculator is a user-friendly and efficient tool that simplifies the yarn purchasing process, ensuring you have the right amount of skeins of yarn for your project without any guesswork.

Oh and if you are working with multiple stitches, I would encourage you to use this other calculator version instead!


Related Post:

Quick Gauge Calculator | How to measure your crochet swatch


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Where Do I Start?


To calculate the yardage estimate for any crochet project, you will need to consider a few factors such as the size of the project, the type of yarn you’re using, the stitch pattern, and your personal tension or gauge.

Here’s a quick run down on what you would need to do first.

  1. Project at hand: Once you have decided what you will be making, take note of the size of the pattern that you will be following or the dimension you’d like for your project to be. 🧶 Here are some great selection of free crochet  patterns to chose from.

  2. Yarn weight: Check the yarn label or pattern instructions to identify the fiber weight of the yarn you are using such as fingering, worsted or bulky. They may also come in numbered categories (see image below). 

Chart courtesy of Craft Yarn Council
Chart courtesy of Craft Yarn Council

4. Hook Size: The hook sizes also play a very important role in your final outcome. There are so many different sizes to choose from, so play around with the ones that suit you the best.

5. Check your gauge: The pattern or yarn label usually specifies a recommended gauge, which indicates the number of stitches and rows per inch or centimeter.

This information helps ensure your finished project matches the intended size. If you are making your own project freehand, you will still need to make a gauge swatch in order to determine how much yarn you will need.

Here is a quick guide on how to measure a swatch gauge. Once you have established the size and measurement of your gauge, you should be able to determine how many rows and stitches you will need per panel or per piece.




calculate yarn

The first thing to do is to select the Measurement Unit you’d prefer to use. Imperial (Yards & Inches) or Metrics (Meters & Grams).

Next, you would need to input the total Length per Skein. You can find this by checking the information written on the yarn sleeve. This would either be in yards or in meters.

image 143

Once you have these two details inputted and have already completed a gauge swatch for your project, it is time to start frogging (rip-it rip-it!)

For simple demonstration purposes, I have worked up 10 half double crochet stitches and 2 rows like this image below. Otherwise, use your swatch.

2 rows and 10 stitches of half double crochet

If your pattern calls for 2 rows of 2 different stitches, then work up 2 sets of rows of those stitches and count that as 1 row to frog. Or you can use this other handy calculator instead.

Next, you will hold on to the last stitch just under the loop made, and without letting it go, you will unravel/ frog/ rip/ pull apart 10 stitches from that row.

how to calculate yardage

Place a stitch marker on the last stitch so it does not come apart (while still holding on to the yarn) and measure the length from your fingertips to the stitch marker.

(Tip: You could also slip a stitch marker through the yarn where your fingertips are)

image 145

Remember not to stretch or slack the yarn when measuring or you will not get an accurate reading resulting in getting more or less yarn than actually required.

Now input the total length into the next column – Length of 10 Sts.

image 146

For the next column, key in the Number of Stitches needed per row and the Number of Rows needed per panel, piece, or item that you are making. 

Then include the Number of Panels you will be making based on the same number of stitches and rows mentioned earlier. If you only have 1 item then just key in 1.

Now let the calculator do the rest!

image 147

You will be able to see the Total Length in yards or meters for your project and the Number of Skeins/ balls / yarns that you will need.



* hover over the [ℹ️] tab for more information about each column.


I hope you have enjoyed using this Free Yarn Calculator today. And if all fails, here is a quick chart on how much yarn you would need for each project below, courtesy of Lion Brand.

How Much Yarn do i need
Chart courtesy of Lion Brand Yarns

Do note that the yardage is just an estimate and has been rounded up to account for the differences between a knit and a crochet item. But this should be able to give you a rough idea.

If you’re looking for your next project, why not check out all the Free Patterns I have here? And if would like to receive updates on all our new patterns in your inbox, just subscribe to our mailing list. 

If video tutorial is more your thing, do have a peek at my YouTube channel too! Subscribe if you think they’re alright 🙂



 Let me know if you have any questions or feedback in the comment section below.

Don’t forget to tag me on Instagram and Facebook  @theknottylace, I would love to see your work!


Thanks! and Happy hooking
Shaz 🌺

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