Aspect Ratio Calculator
Resize while keeping proportions, and identify common ratios.
Aspect ratio
16 : 9
widescreen HD
Decimal
1.77778
Megapixels
2.07
Scaled
720
ShowHide the working
- 11,920 : 1,080 simplifies (÷120) to 16 : 9
- 2New height = 720
Formula
ratio = width ÷ gcd : height ÷ gcdHow it works
Simplifies a width and height to an aspect ratio, and scales dimensions while keeping proportions when you fill in one new side.
Example
1920 × 1080 is 16:9; scaled to 1280 wide, the height is 720.
About the Aspect Ratio Calculator
Resize while keeping proportions, and identify common ratios. It sits in the Developer section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Aspect Ratio Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Aspect Ratio Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Aspect Ratio Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Developer?
- Bases, bitwise math, timestamps, data sizes and aspect ratios. You can browse the full Developer category for related calculators.