A7 at 300 DPI is 874 × 1240 pixels

A7 (74 × 105 mm) at 300 DPI is 874 × 1240 pixels, which is 1.1 megapixels.

Portrait874 × 1240 pixels
Landscape1240 × 874 pixels
With 3 mm bleed945 × 1311 pixels
Megapixels1.1
Aspect ratio1.42:1 (1 to √2 before rounding)
File size3.1 MB 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 945 × 1311 pixels.

Is your photo big enough?

To fill A7 at 300 DPI an image needs at least 874 × 1240 pixels. Cropped to fill the sheet:

At 300 DPI the pixels of a print blend together from about 11.5 inches (29 cm) away. 300 DPI is the standard for print that is held in the hand: books, magazines, photo prints, business cards and flyers. At reading distance the eye can no longer pick out the pixels.

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 300 DPI

A7 is an eighth of A4, used for labels, tickets and pocket cards. See A7 in pixels at every resolution or everything at 300 DPI.