Gifs Calculator

300 ppi is the usual figure for a photographic print held at reading distance; large prints viewed from further away work at far less.
Used with the print length below to get the density of an existing print.
Print width
10.000 in
Image Size & Print Size Calculator
Print height
8.000 in
Print width
25.40 cm
Print height
20.32 cm
Pixel density
300.00 ppi
Megapixels
7.200 MP
Aspect ratio
5:4
Photos that fit on the card
2,560
Card capacity
64,000 MB
Worked out from Definition of pixel density: ppi = pixels / inches of print and 2 other sources.
Card capacity is decimal (1 GB = 1000 MB) as sold, and part of the card is taken by its file system, so the real photo count is a little lower. Raw file sizes also vary with scene detail.

How this is worked out

3 steps
  1. At 300 ppi, 3000 x 2400 px prints 10 x 8 in (25.4 x 20.32 cm).
  2. That is 7.2 megapixels at an aspect ratio of 5:4.
  3. Capacity: 64 GB = 64000 MB; floor(64000 / 25) = 2560 photos.

Results are general information, not financial, tax, legal, medical or engineering advice.