Scale Factor Between Sizes
Calculator
Results
- Scale factor
- 2.828571
- Scale (%)
- 282.857142
- Area factor
- 8.000816
Design and print results
| Scale factor | 2.828571 |
| Scale (%) | 282.857142 |
| Area factor | 8.000816 |
formula-map diagram
- Scale factor
- 2.828571
- Scale (%)
- 282.857142
- Area factor
- 8.000816
Formula breakdown
Formula
scale = output size ÷ source size= 2.8285714285714
Note
Simplified model: these are standard prepress and typographic relationships computed on nominal values. Real press bulk, paper caliper and shrinkage, ink limits for a given profile, font metrics and binding allowances vary by supplier and by job, so confirm with your printer and a proof before going to press.
More in Design and printing
See all →Frequently asked questions
How is a scale factor between two sizes calculated?+
Divide the target size by the original size (using the same unit for both): a scale factor of 2 means the new size is twice as large, while 0.5 means it's half. Apply the same factor to both width and height to preserve proportions.
Can I use a different scale factor for width and height?+
You can, but doing so distorts the original proportions, stretching or squashing the image or object rather than scaling it uniformly. Use a single factor unless intentional distortion is the goal.
How do I use a scale factor to enlarge a model or drawing for printing?+
Multiply every original dimension by the calculated factor to get the enlarged dimensions. A scale factor of 4 applied to a 2-inch part produces an 8-inch printed version, keeping every proportion and internal measurement consistent.
What's the difference between a scale factor and a scale ratio like 1:50?+
They express the same relationship differently — a ratio of 1:50 means the real object is 50 times larger than the model, which is mathematically the same as a scale factor of 1/50 (0.02) applied to the real size to get the model size.
Why does my scaled object look correct in one dimension but off in another?+
You likely applied the scale factor to only one dimension or mixed up which direction (enlarging vs. shrinking) the factor should go. Double-check whether you're multiplying or dividing by the factor based on whether you're scaling up or down.