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THE FEUTEX TOOLKIT

Picture Mat Offset Borders

Calculate equal side borders and unequal top and bottom borders for a picture mat with bottom weighting.

Home workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaSide border = (frameW-artW)/2; Top border = (frameH-artH-offset)/2; Bottom border = (frameH-artH+offset)/2

Made for real tasks

  • Calculate equal side borders and unequal top and bottom borders for a picture mat with bottom weighting.
  • Compare an alternative set of measurements without uploading personal data.
Explore step-by-step workflows →

Worked example

Inputs

Mat outer width
40 cm
Mat outer height
50 cm
Visible art width
28 cm
Visible art height
35 cm
Extra bottom versus top border
1 cm

Expected results

Side border
6 cm
Top border
7 cm
Bottom border
8 cm

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter mat outer width, mat outer height, visible art width, visible art height, and extra bottom versus top border in the displayed units.
  2. Calculate and use each labeled result for picture mat offset borders. Compare the result with a measured sample before committing materials.

Try this example

{
  "frameW": 40,
  "frameH": 50,
  "artW": 28,
  "artH": 35,
  "offset": 1
}

Accuracy and scope

Visible aperture layout only; add any required overlap to support artwork separately, and check frame rebate dimensions.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.