RabbetReady Cut PlannerOpen calculator

Layout guide

Equal is mathematical. Balanced is visual.

An equal-border mat uses the same top and bottom dimension. A bottom-weighted mat adds a little visual mass below the artwork, which can make the image appear better centered.

How RabbetReady calculates it

Left and right borders remain equal. The bottom-weight value is added to the lower border while the remaining vertical space is divided evenly between top and bottom.

Choose with the finished location in mind

The calculator supplies geometry, not an aesthetic rule. The artwork, frame profile and hanging height should decide the final balance.