Pixels to inches and back
Switch direction without opening a separate page. Both width and height remain available in either mode.
Pixels to Inches Converter
Convert pixel dimensions to inches—or inches back to pixels—with a custom PPI or DPI. Check width, height, diagonal size, aspect ratio and common screen or print presets.
Two-way conversion72–600 PPI presetsWidth and height togetherNo image upload
SIZE THE WHOLE CANVAS
Convert width and height without losing the density.
Enter a one-dimensional value or a full image size. Choose the density for a screen, social graphic, document or print, and the result updates immediately.
Screen / CSS
Common canvases
The calculation runs locally. No image is uploaded.
DIRECT ANSWER
How do you convert pixels to inches?
Divide the pixel count by pixels per inch: inches = pixels ÷ PPI. A 1920 × 1080 image is 20 × 11.25 inches at 96 PPI, but only 6.4 × 3.6 inches at 300 PPI. The pixel dimensions do not change; the chosen density changes the physical size.
DESIGNED FOR REAL DIMENSIONS
One converter for screen and print planning
A single-value answer is often not enough. The workspace keeps width, height, ratio and density visible together.
Custom PPI or DPI
Use quick values for 72, 96, 150, 300 and 600, or type the density supplied by your design or print workflow.
Common canvas presets
Load square social media, story, Full HD, A4 and 4 × 6 examples, then adjust any value.
Proportional preview
See the orientation, aspect ratio and diagonal of the converted size without uploading an image.
THE CONVERSION RULES
Pixels, inches, PPI and DPI
The formula is short, but the density has to match the job. These distinctions prevent the most common conversion mistake.
Pixels to inches
Divide width and height in pixels by PPI. At 300 PPI, 3000 × 2400 pixels becomes 10 × 8 inches.
Inches to pixels
Multiply width and height in inches by PPI. A 4 × 6 inch print at 300 PPI needs 1200 × 1800 pixels.
PPI and DPI
PPI describes image or display pixels per inch. DPI describes printer dots per inch; the terms are often used together in print-size instructions.
CSS reference size
For web layout, the reference conversion is 96 CSS pixels per inch. Physical monitors do not all have the same real pixel density.
PRINTING NOTE
A conversion does not add image detail
Changing PPI metadata or choosing a smaller print size does not create new pixels. Sharpness depends on the original image, viewing distance, printer and paper. Use the converter for dimensions, then follow the print provider's required pixel size and colour guidance.
PUBLIC REFERENCES
Standards behind the units
These standards and public references explain CSS pixels, length units and the inch as a measurement.
Reviewed 29 July 2026- W3CCSS Values and Units — absolute lengthsThe web standard defines the reference relationship of 96 CSS pixels to one inch.
- MDN Web DocsCSS length valuesAn open explanation of pixels, inches and other CSS length units.
- NISTGuide for the Use of the International System of UnitsThe U.S. measurement reference records the exact relationship between inches and metric units.
COMMON QUESTIONS
Pixels to inches: common questions
Quick answers about 96 PPI, 300 DPI, Full HD, social images, Photoshop, Illustrator, printing and accuracy.
How do I convert pixels to inches?
Divide the number of pixels by PPI. For example, 1200 pixels at 300 PPI is 4 inches, while the same 1200 pixels at 96 PPI is 12.5 inches.
How many pixels are in one inch?
It depends on the chosen density. One inch is 96 CSS pixels for the web reference, 300 pixels at 300 PPI print density, or any other PPI value your workflow specifies.
What size is 1920 × 1080 pixels in inches?
At 96 PPI it is 20 × 11.25 inches. At 300 PPI it is 6.4 × 3.6 inches. Enter another density to calculate a different physical size.
How many pixels do I need for a 4 × 6 inch print?
At 300 PPI, multiply each side by 300: 4 × 300 = 1200 and 6 × 300 = 1800, so the target is 1200 × 1800 pixels.
Should I use 96 PPI or 300 PPI?
Use 96 for CSS and common screen-reference calculations. Use 300 when a print service requests standard high-resolution artwork. Always follow the provider's exact specification.
Are PPI and DPI the same thing?
Not technically. PPI describes pixels in a digital image or display, while DPI describes printed dots. People often say DPI when entering image density, so the field accepts either workflow term.
Can this replace changing units in Photoshop or Illustrator?
It can give the dimensions before you open the design application. You still need to set document units, resampling and print settings inside the application itself.
Does the converter upload my photo?
No photo is needed. Only the numbers you enter are calculated in your browser, so the page does not upload or inspect an image.