Scale Factor Calculator
Free online tool to instantly calculate proportional dimensions and surface area for any 3D object.
Scaled Final Results
L: 20 ft
W: 20 ft
H: 20 ft
Surface Area: 2400 sq ft
Original Size
Scaled Size
How to Use the Scale Factor Calculator
- Input your base dimensions: Enter the original length, width, and height of your object.
- Select your unit: Choose between microscopic units (nm, µm), standard units (mm, cm, in, m), or architectural units like feet (ft).
- Apply scaling: Enter a multiplier in the Magnification (x) field, OR enter a percentage in the Percentage (%) field. The tool will automatically sync the two.
- View Area & Dimensions: The calculator outputs the exact new dimensions and calculates the total outer surface area (e.g., in sq ft).
- Compare visually: The 3D viewer displays both the original and scaled objects side-by-side using the exact same camera distance, giving you a true 1:1 visual comparison of the size difference.