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Print sizing terms used on this site, with the arithmetic

Twelve terms, each defined by the arithmetic the calculators and tables use: pixels per inch, effective ppi, aspect ratio, crop loss, listed size, piece width, gap, total row width, wall share, price per square inch, count band and 60+.

Pixels per inch (ppi)

The number of pixels of the photo that fall on each inch of the print. Our standard is 100 pixels per inch, so a 12 x 18 inch print needs 1,200 x 1,800 pixels.

Effective ppi

The ppi a photo really gives at a chosen print size after any crop: the lower of kept pixels on the long side divided by print inches on the long side, and the same for the short side.

Aspect ratio

The longer side divided by the shorter side. A 12 x 18 inch print has ratio 18 / 12 = 1.5, written 3:2.

Crop loss

The share of a photo removed to fit a print shape: 1 minus the smaller ratio divided by the larger ratio. A 3:2 photo on a 4:3 print loses 1 - 1.333 / 1.5 = 11.1%.

Listed size

A width and height in inches that has a price on the rate card. Prices are given before and with GST.

Piece width

The side of a piece that runs across the wall: the shorter side when hung portrait, the longer side when hung landscape.

Gap

The space in inches between two neighbouring pieces in a row.

Total row width

Number of pieces x piece width + (number of pieces - 1) x gap.

Wall share

A piece width as a percentage of the usable wall width: piece width / wall width x 100.

Price per square inch

The price with GST divided by width x height in inches, used to compare sizes and products on one scale.

Count band

A range of design counts used to sort collections: 500 or more, 200 to 499, 100 to 199, and fewer than 100.

60+ (no count stated)

A collection page that lists exactly 60 designs and states no count; no count is claimed for it.

Where each is used

For print, order and GST terms see the main glossary.

Open the studio

Related

• Glossary: print, size and order terms
• Pixels needed for every listed size
• Library: collections by design count

Sources: Terms: defined by the arithmetic shown on this page. Prices, GST rates and sizes: ArtzFolio Custom rate card (our price list file, generated 2026-11-10). 100 pixels per inch: ArtzFolio standard print-file production rules. All other figures are arithmetic shown on this page. Data as of 2026-11-10; page checked 2026-11-12. Always confirm the live price in the studio before ordering.