E-reader Pixel Density (PPI) List


Phone / Tablet / Laptop / E-Reader / Desktop LCD / HDTV

Rank Manufacturer and model name Year introduced Screen size Screen area Resolution Ratio PPI
1. Kobo Aura H2O 2014 6.8″ 22.24 square inches (5.4″x4.1″)

1430×1080
143:108 263.53
2. Amazon Kindle Fire HD 8.9 2012 8.9″ 35.6 square inches (7.5″x4.7″)

1920×1200
WUXGA
8:5 254.40
3. Barnes & Noble Nook HD 2012 7″ 22.02 square inches (5.9″x3.7″)

1440×900
8:5 242.59
4. iRiver Story HD 2011 6″ 17.28 square inches (3.6″x4.8″)

768×1024
3:4 213.33
5. Amazon Kindle Paperwhite 2012 6″ 17.22 square inches (4.8″x3.6″)

1024×758
512:379 212.34
6. Barnes and Noble Nook Color 2010 7″ 21.37 square inches (6″x3.5″)

1024×600
128:75 169.55
7. Sony PRS505 2007 6″ 17.28 square inches (3.6″x4.8″)

600×800
3:4 166.67
8. Amazon Kindle DX 2010 9.7″ 43.91 square inches (5.5″x8″)

824×1200
103:150 150.07

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