How do I choose the right frame size?

The frame inner dimensions should match your mat outer dimensions. If your print is 30x20cm with 5cm mat borders, you need a frame with inner dimensions of 40x30cm. Standard frame sizes in the UK include A4, A3, 30x40cm, 40x50cm, and 50x70cm.

How wide should the frame moulding be?

Frame moulding width depends on the print size and style. Small prints (A4 and under) suit 1.5-2.5cm mouldings. Medium prints (A3-A2) suit 2.5-4cm. Large prints (A1+) suit 4-6cm. Slim modern frames use 1-2cm, while ornate traditional frames can be 6-10cm wide.

What frame material should I choose?

Wood frames are classic and suit most styles. Aluminium frames are modern and lightweight. For long-term archival display, use UV-protective glass or acrylic, acid-free mounting, and conservation-grade mat board. Avoid cheap clip frames for valuable prints.

Does frame colour affect the image?

Frame colour influences how viewers perceive the image. Black frames create a modern, dramatic look. White frames feel clean and contemporary. Natural wood suits landscape and nature images. Silver and gold suit formal or classic subjects. Match the frame to the image mood and your wall colour.

PhotoCalcs

Frame Size Calculator — Print, Mat & Frame Dimensions

Find the right frame size for your print and mat combination.

Print Width

Print Height

Mat Border

0 for no mat

Frame Moulding Width

How We Calculate This

Inner Frame (Glass/Mat Size)

Inner = print size + (2 x mat border)

Outer Frame (Wall Size)

Outer = inner + (2 x frame moulding width)

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates based on standard optical and photographic formulas. Results may vary with specific equipment.