Picture/Collage Frame Calculator

Picture Frame Calculator

Calculate dimensions for your picture or collage frame project.

Settings

Frame is for:

Measurement Unit: Use decimal for fractions (e.g., 5.5 for 5 1/2).

Mat Dimensions

Mat Width (Total Border):

Total width of visible mat border (e.g., 4 means 2 each side).

Mat Height (Total Border):

Total height of visible mat border (e.g., 4 means 2 top/bottom).

Frame Details

Border Width (Moulding):

Frame Rabbet/Overlap:

How much the frame lip covers the glaze/mat edge.

Calculated Dimensions

Glaze Size (Glass/Backing): x
Inner Frame Size (Opening): x
Outer Frame Size: x
Frame Material Length Needed:

Calculations are estimates. Always double-check measurements before cutting materials. Material length is based on outer perimeter; add extra for cuts/waste. Mat dimensions assume equal borders. For collages, enter the overall dimensions of the entire arrangement.