Length converter
DPI/PPI Length Converter
Find physical width, height, and print size from pixel dimensions and DPI or PPI.
Pixels to physical size
Results update instantly when values change.
Physical width
25.4 cm
Physical height
20.32 cm
PPI describes pixels per inch in an image or display. DPI describes printer dots per inch. Density is required because pixels do not have a universal physical size.
Conversion formula
width in inches = pixel width ÷ PPI; height in inches = pixel height ÷ PPIAt 300 PPI, 3,000 pixels prints 10 inches wide.
About this conversion
Digital pixels do not have an inherent physical length. Their printed or displayed size is determined by pixel density. Enter the actual PPI or DPI required by the image, display, or print workflow instead of assuming a universal pixel size.
Popular Length conversions
Convert Inch to other length units
Frequently asked questions
What density should I use for print?+
300 PPI is a common high-quality target, but the correct value depends on printer, viewing distance, and output method.
Does changing PPI add image detail?+
No. Changing metadata alone does not create pixels; it changes the intended physical size unless the image is resampled.
Related tools
Browse more length converters.