Screen Size Calculator
Use our online screen size calculator to estimate monitor, laptop, and TV dimensions with automatic calculations, aspect ratios, and screen resolutions.
Screen Specifications
Measurements refer to the visible rectangular display area, excluding the bezel and outer frame.
Screen Preview
16:9 aspect ratio
Detailed Measurements
| Width | 597.7 mm |
|---|---|
| Height | 336.3 mm |
| Diagonal | 685.8 mm |
| Pixel resolution | 1920 × 1080 |
| Pixel pitch | 0.311 mm |
| Screen perimeter | 73.5 in |
Online Screen Size Calculator: Calculate Width, Height, and Display Size
Choosing the right monitor, laptop, television, or display is easier when you know its actual dimensions. Our online Screen Size Calculator helps you calculate screen width, height, diagonal size, display area, and pixel density using a simple online tool.
How to Use the Screen Size Calculator
Using the tool is simple:
- Choose whether you know the diagonal, width, or height.
- Enter the measurement and select a unit.
- Choose an aspect ratio, such as 16:9, 16:10, or 21:9.
- Select the screen resolution to calculate pixel density and pixel pitch.
- View the updated results and screen preview automatically.
You do not need to click a Calculate button. The results update when you change the inputs. Use the Reset Calculator button to restore the default settings.
Key Features of the Calculator
- Automatic calculations: View updated results whenever you change supported inputs.
- Multiple measurement units: Work with inches, centimeters, and millimeters.
- Aspect ratio options: Calculate dimensions for widescreen, ultrawide, square, and other display formats.
- Resolution presets: Select common resolutions, including Full HD, QHD, 4K, and 8K.
- Pixel density: Estimate pixels per inch (PPI) when a resolution is selected.
- Detailed measurements: View screen area, perimeter, pixel pitch, width, height, and diagonal.
- Visual screen preview: See a display illustration based on the selected aspect ratio.
- Responsive design: Use the calculator on desktop computers, tablets, and mobile devices.
Frequently Asked Questions
How is screen diagonal measured?
Screen diagonal is the straight-line distance between opposite corners of the visible display area, excluding the bezel.
Can I calculate screen width and height from the diagonal?
Yes. Enter the diagonal measurement and select the correct aspect ratio. The calculator estimates the screen’s width and height automatically.
What is aspect ratio?
Aspect ratio describes the proportional relationship between screen width and height. For example, 16:9 is a common widescreen format.
What does PPI mean?
PPI stands for pixels per inch. It indicates how many pixels fit into one inch of the display and helps describe pixel density.
Does the calculator work on mobile devices?
Yes. The responsive interface is designed to work on smartphones, tablets, and desktop computers.
Are the results exact?
The results are mathematical estimates based on the information you enter. For the most accurate result, use the correct screen measurement, aspect ratio, and resolution.