Pattern Scaling & Resize Calculator

Need to resize a motif or fix a PDF pattern that printed the wrong size? This calculator gives you the exact percentage setting for your printer or photocopier.

Size measured on paper

Correct Size from pattern

Why Use This Tool?

Fix PDF printing errors (e.g., when the "Test Square" is the wrong size).

Calculate the photocopy percentage to enlarge or reduce any design.

Resize embroidery motifs or appliqué shapes to fit your project.

Save paper and ink by getting the scale right the first time.

How to Use It

1

Step 1

Choose your goal: "Fix a Printing Error" or "Resize a Design".

2

Step 2

Enter the "Original" size (what you have now).

3

Step 3

Enter the "Target" size (what you want it to be).

4

Step 4

Click "Calculate" to get the exact percentage setting for your printer.

Frequently Asked Questions

How do I fix a PDF pattern that printed the wrong size?

Measure the "Test Square" on your printed page. Enter that measurement as the "Current Size". Then enter the size it *should* be (usually 5cm or 2 inches) as the "Target Size". The result is the custom scale percentage you should use in your print settings.

Can I use this for grading patterns?

Yes, for simple resizing (e.g., making a bag 10% bigger). However, for fitted clothing, simple scaling changes the proportions (necklines get too wide, etc.). For clothing, proper grading is recommended, but this tool is great for accessories and motifs.

Does it matter what units I use?

No. As long as you use the same unit for both numbers (e.g., both in cm or both in inches), the percentage calculation will be correct.

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