A7 at 150 DPI is 437 × 620 pixels

A7 (74 × 105 mm) at 150 DPI is 437 × 620 pixels, which is 0.27 megapixels.

Portrait437 × 620 pixels
Landscape620 × 437 pixels
With 3 mm bleed472 × 656 pixels
Megapixels0.27
Aspect ratio1.42:1 (1 to √2 before rounding)
File size794 KB as uncompressed 8-bit RGB; a JPEG or PNG is smaller
Paper size74 × 105 mm (2.91 × 4.13 in)

The working

Pixels are inches multiplied by the resolution, and an inch is 25.4 mm.

Bleed is extra image past the trim line, so that a cut that lands slightly off still leaves ink to the edge. Print shops usually ask for 3 mm on every side of an A-series page, which makes the file 472 × 656 pixels.

Is your photo big enough?

To fill A7 at 150 DPI an image needs at least 437 × 620 pixels. Cropped to fill the sheet:

At 150 DPI the pixels of a print blend together from about 22.9 inches (58 cm) away. 150 DPI is a common minimum for posters and large prints seen from a step or two away, and a usual setting for scanning documents that only need to be read.

A7 at other resolutions

ResolutionPixelsWith bleedMegapixelsUncompressed
72 DPI210 × 298227 × 3150.06183 KB
96 DPI280 × 397302 × 4200.11326 KB
100 DPI291 × 413315 × 4370.12352 KB
150 DPI437 × 620472 × 6560.27794 KB
200 DPI583 × 827630 × 8740.481.4 MB
240 DPI699 × 992756 × 10490.692 MB
300 DPI874 × 1240945 × 13111.13.1 MB
400 DPI1165 × 16541260 × 17481.95.5 MB
600 DPI1748 × 24801890 × 26224.312 MB
1200 DPI3496 × 49613780 × 52441750 MB

Other sizes at 150 DPI

A7 is an eighth of A4, used for labels, tickets and pocket cards. See A7 in pixels at every resolution or everything at 150 DPI.