How do I maintain the right proportions?

Lock the aspect ratio (width-to-height ratio) when scaling. Enter your target width and the height will calculate automatically. This prevents the design from looking stretched or squashed.

How large should a car decal be?

For car window decals, 10-20 cm is typical. Bumper stickers are usually 25-30 cm wide. Side panel decals range from 30-60 cm. Always check that the decal will not obstruct the driver view.

Does scaling up affect vinyl quality?

Vinyl cutting quality is not affected by scaling since it cuts vector paths. However, any raster images within the design will pixelate when enlarged. Ensure your source design is vector or high resolution.

How do I calculate vinyl needed for a scaled design?

The area scales by the square of the linear scale factor. If you double the size (2x), you need 4 times the vinyl area. Use the Vinyl Sheet Calculator with the scaled dimensions.

CraftCalcs

Decal Size Calculator — Scale Designs Proportionally

Scale decal designs proportionally for different surfaces and applications.

Original Width

Original Height

Target Width

Lock Aspect Ratio

Maintain proportions

How We Calculate This

How the Calculation Works

Proportional scaling: scale factor = target width / original width. Scaled height = original height x scale factor.

Scale percentage = (target width / original width) x 100. The area ratio shows how much more (or less) material the scaled design uses - area scales by the square of the linear scale factor.

Frequently Asked Questions

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Last updated: 2025-02-20

All calculations are estimates. Always verify quantities before purchasing materials.