Free sewing calculators for your blog

Add a free sewing calculator to your blog, shop or class page: copy the code under any calculator below and paste it into a post. It works on phones, sends nothing your readers type anywhere, and stays free.

How to embed a calculator

Find the calculator you want below and try it in the preview.
Press Copy embed code.
Paste the code into an HTML block on your page and publish.

Each embed shows one calculator with a small credit link to Sewzy under it. Please keep that link: it is how the calculators stay free. Questions or a calculator you would like to see? Write to hello@sewzy.app.

Fabric calculator

Yards and meters for rectangular pieces, with seam allowance, shrinkage and a one-way fabric option. Open the full fabric calculator.

Embed code

<iframe src="https://sewzy.app/embed/fabric-yardage-calculator/" title="Fabric calculator by Sewzy" width="100%" height="920" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/fabric-yardage-calculator/">Fabric calculator by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Porch goose size finder

Height, body and head measurements in, Small, Standard or Large out, with the reason and a printable chart. Open the full porch goose size finder.

Embed code

<iframe src="https://sewzy.app/embed/porch-goose-size-finder/" title="Porch goose size finder by Sewzy" width="100%" height="980" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/porch-goose-size-finder/">Porch goose size finder by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Sewing pattern size calculator

Bust, waist and hip in, your standard pattern size out, with the blend advice and a printable chart. Open the full sewing pattern size calculator.

Embed code

<iframe src="https://sewzy.app/embed/sewing-pattern-size-calculator/" title="Sewing pattern size calculator by Sewzy" width="100%" height="840" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/sewing-pattern-size-calculator/">Sewing pattern size calculator by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Seam allowance converter

Inches to millimeters and centimeters, shown as a sewing fraction, with a chart of common allowances. Open the full seam allowance converter.

Embed code

<iframe src="https://sewzy.app/embed/seam-allowance-converter/" title="Seam allowance converter by Sewzy" width="100%" height="500" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/seam-allowance-converter/">Seam allowance converter by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Circle skirt calculator

Waist radius, hem radius and yards of fabric for full, half and quarter circle skirts. Open the full circle skirt calculator.

Embed code

<iframe src="https://sewzy.app/embed/circle-skirt-calculator/" title="Circle skirt calculator by Sewzy" width="100%" height="1180" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/circle-skirt-calculator/">Circle skirt calculator by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Quilt size calculator

Finished quilt size by bed, plus backing and binding yardage, in inches and centimeters. Open the full quilt size calculator.

Embed code

<iframe src="https://sewzy.app/embed/quilt-size-calculator/" title="Quilt size calculator by Sewzy" width="100%" height="1050" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/quilt-size-calculator/">Quilt size calculator by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Bias binding calculator

Binding length, strip width and the fabric square to cut for continuous bias binding. Open the full bias binding calculator.

Embed code

<iframe src="https://sewzy.app/embed/bias-binding-calculator/" title="Bias binding calculator by Sewzy" width="100%" height="985" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/bias-binding-calculator/">Bias binding calculator by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Elastic length calculator

Elastic cut length for a waist, wrist or ankle from the body measurement and the elastic type. Open the full elastic length calculator.

Embed code

<iframe src="https://sewzy.app/embed/elastic-length-calculator/" title="Elastic length calculator by Sewzy" width="100%" height="925" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/elastic-length-calculator/">Elastic length calculator by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Pillow cover calculator

Front and envelope back cut sizes for a cushion cover from the insert size, plus the yardage. Open the full pillow cover calculator.

Embed code

<iframe src="https://sewzy.app/embed/pillow-cover-calculator/" title="Pillow cover calculator by Sewzy" width="100%" height="1220" style="border:0;max-width:700px" loading="lazy"></iframe>
<p style="font-size:14px;margin:6px 0 0"><a href="https://sewzy.app/articles/pillow-cover-calculator/">Pillow cover calculator by Sewzy</a></p>
<script>addEventListener("message",function(e){if(e.origin==="https://sewzy.app"&&e.data&&e.data.sewzy&&e.data.h>200)document.querySelectorAll('iframe[src*="/embed/'+e.data.sewzy+'/"]').forEach(function(f){f.style.height=e.data.h+"px"})});</script>

Questions about embedding

Is it really free?

Yes. The calculators are free to embed, with no sign-up and no fee. Please keep the small credit link under the calculator.

Does it collect my readers' data?

No. The calculator runs in the reader's browser and nothing they type is sent anywhere. The embedded page has no analytics and no ads.

Where do I paste the code?

Anywhere your site accepts HTML: a Custom HTML block in WordPress, the HTML view of a Blogger post, a Code or Embed block in Squarespace or Wix, or an Embed box in Google Sites.

Will it work on phones?

Yes. The calculator fits the width of your page, down to phone size. Each snippet sets a height that fits the result box on a phone.

Can I use it with a class or a sewing group?

Yes. Teachers can embed a calculator on a class site, or share the link to the full calculator page with students.

Pick a pattern tonight

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