Picture frame calculator
Enter the artwork and mat. The outside size includes the moulding face, not just the mat.
Result
Package / glass 16" × 19 1/2"
Mat window 10 1/2" × 13 1/2"
Finished outside 18 5/8" × 22 1/8"
Sight opening 15 5/8" × 19 1/8"
Your dimensions will carry over. Add your own artwork next.
- Artwork11" × 14"
- Package / glass (dashed)16" × 19 1/2"
- Actual rabbet recess16 1/8" × 19 5/8"
- Visible sight opening15 5/8" × 19 1/8"
- Finished outside18 5/8" × 22 1/8"
How it works
The package is the artwork plus the mat borders. Glass and backing match that package.
The rabbet is the package plus a little fitting clearance. The sight opening is the rabbet minus the lip that covers the glass. The finished outside size adds the moulding face beyond that sight opening.
A heavier bottom border keeps a portrait from looking low once the frame is on the wall.
Common mistakes
- Measuring the paper instead of the image you want to keep.
- Buying a frame for the outside size when the shop label means the opening.
- Cutting the mat window to the full print, so the edge slips and shows a gap.
Frequently asked questions
Does this include the moulding width?
Yes. Face width and rabbet overlap are part of the finished outside size.
Should I measure the print or the visible image?
Measure the image you want to keep. Overlap hides the edge inside the window.
Why is the outside size larger than the glass?
The moulding face sits outside the sight opening. Glass matches the package.
Can I use centimetres?
Yes. Switch the unit control. The math stays in millimetres either way.