Transparent formulas
Every result includes the equation, units and assumptions used to produce it.
Practical dimension tools
Measure pixels in the real world.
Calculate screen dimensions, print sizes and image proportions with transparent formulas. Every tool runs locally in your browser.
55 in
Example: a 55-inch 16:9 display is about 47.94 × 26.96 inches.
Calculator library
Eight focused calculators
Each page solves one clear sizing problem, shows the formula and gives you useful reference values.
Screen size
Use this screen size calculator to convert a diagonal and aspect ratio into exact width and height. Add resolution to calculate PPI and pixel pitch.
Open calculator →Print size
Use this print size calculator to convert image pixels and PPI into inches and centimeters, with photo print sizes and paper-size comparisons.
Open calculator →Aspect ratio
Use this aspect ratio calculator from image dimensions, width and height to reduce ratios, resize proportionally, and compare fit or crop sizes.
Open calculator →PPI
Use this PPI calculator to calculate pixels per inch and pixel pitch from display resolution and diagonal size, with common 1080p, 2K and 4K monitor examples.
Open calculator →Viewing distance
Use this TV viewing distance calculator to estimate recommended distance from screen size, aspect ratio and a chosen field of view.
Open calculator →Projector size
Use this projector throw distance calculator to calculate screen width, height, diagonal, throw distance and throw ratio for common projection setups.
Open calculator →Pixels to cm
Use this pixels to cm converter to convert pixels to centimeters, millimeters and inches with 72, 96, 150 and 300 PPI presets.
Open calculator →Image size
Use this image dimensions calculator to read pixel dimensions locally, calculate aspect ratio, megapixels and print sizes at multiple PPI values.
Open calculator →Design principles
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Useful on any device
Fast static pages, keyboard-friendly forms and mobile layouts keep the tools practical.
Popular guides
Common dimensions people search for
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