# Fix Fabric Calculator Errors

## <mark style="color:blue;">Fabric Calculation Errors</mark>

There can be a few different oopsies that will throw off your fabric calculations. We explain them here and how to fix them.

<table data-view="cards"><thead><tr><th></th><th data-hidden></th><th data-hidden></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:blue;"><strong>Shape is Too Big</strong></mark></td><td></td><td></td><td></td><td><a href="fix-fabric-calculator-errors/fix-shape-is-too-big">fix-shape-is-too-big</a></td></tr><tr><td><mark style="color:blue;"><strong>Phantom Shape</strong></mark></td><td></td><td></td><td></td><td><a href="fix-fabric-calculator-errors/fix-phantom-shape">fix-phantom-shape</a></td></tr></tbody></table>

## <mark style="color:blue;">Best Fix is Prevention</mark>

The best way to avoid any of these potential errors is to create your blocks using our recommended Build a Block Unit series. This helps to prevent block units not being recognized by the Fabric Calculator and any other errors that might occur.

{% embed url="<https://help.prequilt.com/prequilt-101/build-a-block-unit-for-auto-recognition>" %}