1920 x 1080
- Ratio
- 16:9
- Decimal
- 1.7777777778
- Orientation
- Landscape
Aspect Ratio Calculator
Use this free aspect ratio calculator to simplify width and height ratios or resize a design, image, video, or screenshot without stretching it.
Research-backed assumptions Formula steps Examples included Private in-browser use
Formula steps
- Divide width and height by their greatest common divisor to simplify the ratio.
- Report the simplified width-to-height relationship.
- Round the displayed scaled dimensions for readability.
How to use the aspect ratio calculator
- Choose Simplify ratio, Scale by width, or Scale by height.
- Enter the original width and height.
- Add the new width or height when scaling.
- Check final export dimensions when a platform or print job requires exact pixels.
Common uses
Simplify image, video, thumbnail, and screenshot dimensions.
Resize a design to a new width while preserving height proportion.
Resize a design to a new height while preserving width proportion.
Compare landscape, square, and portrait formats before exporting.
Examples
16:9
1:1
1280 x 720
Frequently asked questions
Plain-language answers about when to use the tool, what it does with your inputs, what to double-check, and how privacy works.
When should I use the Aspect Ratio Calculator?
Use it when your task matches one of these common needs: Simplify image, video, thumbnail, and screenshot dimensions. Resize a design to a new width while preserving height proportion. It works best when you already know the values, dates, units, or settings the page asks for.
What is the Aspect Ratio Calculator doing with my inputs?
In plain language: The calculator divides width and height by their greatest common divisor for the ratio, then scales the missing dimension from the same width-to-height relationship. The examples on the page are there so you can compare your inputs with a filled-out calculation before copying the answer.
What should I double-check before trusting the answer?
Use the exact upload specs for platforms, products, and print jobs. Rounding a scaled dimension can cause a one-pixel difference. Also check that you used the right unit, date, scale, or mode because small input changes can change the result.
Does the site save what I enter?
No. The calculator runs in your browser tab. Your recent answers stay only on the page while you use it, and they are not sent to a server.
Related tools
Color Contrast Checker Check WCAG contrast ratio for text and background hex colors. Open Square Footage Calculator Calculate square feet, square yards, and square meters from length, width, and quantity. Open Conversion Calculator Convert length, mass, volume, and temperature units with clear formula steps. Open