Screen Resolution Calculator
Calculate new screen dimensions while maintaining aspect ratio, or find the aspect ratio of any screen.
How the Screen Resolution Calculator works
Use the Screen Resolution Calculator to find the aspect ratio of a screen or to scale screen dimensions proportionally. Enter the original width in pixels and the original height in pixels. These are the dimensions of your starting screen or image.
To find the aspect ratio, enter only the original width and original height. The calculator will display the aspect ratio in its simplest form.
To scale the resolution, enter either a new width or a new height. Leave the other field blank. For example, if you enter a value for "New width (blank = keep)" and leave "New height (blank = keep)" blank, the calculator will compute the new height that maintains the original aspect ratio. If you enter values for both new width and new height, the calculator will assume you want to calculate the new aspect ratio based on those specific dimensions. Ensure you only fill one of the 'New' fields to scale proportionally.
Formula used
ratio = width ÷ height, reduced by their greatest common divisor
| Symbol | Meaning |
|---|---|
| width, height | original dimensions in pixels |
| new width / new height | leave one blank to scale the other proportionally |
Enter either dimension to get the matching one without distortion. This is the standard way to resize video, thumbnails and photos so nothing stretches.
Inputs used: Original width (px), Original height (px), New width (blank = keep), New height (blank = keep).
Worked example
Here is an example of how to use the Screen Resolution Calculator:
- Enter an "Original width (px)" of 1920.
- Enter an "Original height (px)" of 1080.
- Enter a "New width (blank = keep)" of 2560 and leave "New height (blank = keep)" blank.
- The calculator will show an aspect ratio of 16:9 and a "New height (px)" of 1440. The new width is 2560 px.
Result:
- Aspect ratio: 16:9
- New width (px): 2,560
- New height (px): 1,440
Frequently asked questions
- What is screen resolution?
- Screen resolution is the number of pixels displayed on a screen. It is typically expressed as width × height, for example, 1920 × 1080 pixels.
- What is aspect ratio?
- Aspect ratio is the proportional relationship between the width and height of a screen or image. It is commonly expressed as two numbers separated by a colon, such as 16:9 or 4:3.
- How do I calculate aspect ratio?
- To calculate aspect ratio, divide the width by the height and reduce the resulting fraction to its simplest form. For example, 1920x1080 pixels simplifies to a 16:9 aspect ratio.
- How do I scale an image without distortion?
- To scale an image without distortion, you must maintain its original aspect ratio. If you change the width, calculate the new height proportionally, or vice versa.
- What is 1080p resolution?
- 1080p resolution refers to a display resolution of 1920 pixels wide by 1080 pixels high. The 'p' stands for progressive scan.
- What formula does the Screen Resolution Calculator use?
- It uses ratio = width ÷ height, reduced by their greatest common divisor, where width, height is the original dimensions in pixels; new width / new height is the leave one blank to scale the other proportionally.