An aspect ratio calculator is designed to help compute the proportional relationship between the width and height of an image, screen. This relationship is expressed as a ratio, typically in the format of width:height.
For example, consider a widescreen TV with dimensions of 60 inches wide and 33.75 inches tall. Using aspect ratio calculator, we can determine that this TV has an aspect ratio of 16:9. This means that for every 16 units of width, there are 9 units of height.
Aspect Ratio Calculator
| Resolution | Width | Height | Aspect Ratio | Conversion Equation |
|---|---|---|---|---|
| Full HD | 1920 | 1080 | 16:9 | 1920/1080 = 16/9 |
| 4K UHD | 3840 | 2160 | 16:9 | 3840/2160 = 16/9 |
| 720p | 1280 | 720 | 16:9 | 1280/720 = 16/9 |
| WXGA | 1366 | 768 | 16:9 | 1366/768 ≈ 16/9 |
| SXGA | 1280 | 1024 | 5:4 | 1280/1024 = 5/4 |
| iPad | 2048 | 1536 | 4:3 | 2048/1536 = 4/3 |
| 2K | 2048 | 1080 | 17:9 | 2048/1080 ≈ 17/9 |
| 2.35:1 Cinema | 2560 | 1080 | 2.35:1 | 2560/1080 = 2.35/1 |
| 21:9 UltraWide | 2560 | 1080 | 21:9 | 2560/1080 ≈ 21/9 |
| QHD | 2560 | 1440 | 16:9 | 2560/1440 = 16/9 |
| HD | 1280 | 720 | 16:9 | 1280/720 = 16/9 |
| SVGA | 800 | 600 | 4:3 | 800/600 = 4/3 |
| HD+ | 1600 | 900 | 16:9 | 1600/900 = 16/9 |
| FHD+ | 2400 | 1080 | 20:9 | 2400/1080 ≈ 20/9 |
| WQHD | 3440 | 1440 | 21:9 | 3440/1440 ≈ 21/9 |
| Ultra HD | 7680 | 4320 | 16:9 | 7680/4320 = 16/9 |
| Super HD | 3840 | 1600 | 24:10 | 3840/1600 = 24/10 |
Aspect Ratio Calculation Formula
The formula for calculating aspect ratio is straightforward:
Aspect Ratio = Width : Height
To simplify the ratio, divide both the width and height by their greatest common divisor (GCD). This process is called reducing the fraction.
Consider an image that is 1920 pixels wide and 1080 pixels tall.
Express this as a ratio: 1920:1080
Find the GCD of 1920 and 1080 (in this case, it’s 120).
Divide both numbers by the GCD:
1920 ÷ 120 = 16
1080 ÷ 120 = 9
The simplified aspect ratio is 16:9.
Aspect ratio calculator is particularly useful in various fields, including:
- Photography: Ensuring proper image composition and printing
- Videography: Maintaining consistent framing across different formats
- Web design: Optimizing layouts for various screen sizes
- Graphic design: Creating visually appealing and balanced designs
How Do You Calculate a Ratio?
- Identify the quantities: Determine which two values you want to compare i.e height and width.
- Express as a fraction: Write the first quantity over the second quantity.
- Simplify: Reduce the fraction to its lowest terms by dividing both the numerator and denominator by their greatest common divisor.
- Express as a ratio: Write the simplified fraction with a colon (:) instead of a division sign.
Let’s apply this process to calculate the aspect ratio of a smartphone screen:
Screen dimensions: 2532 pixels (height) by 1170 pixels (width)
Express as a fraction: 1170/2532
Find the GCD (78) and simplify:
1170 ÷ 78 = 15
2532 ÷ 78 = 32.46 (rounded to 2 decimal places)
Express as a ratio: 15:32.46.
In practice, we often round to whole numbers for simplicity, so this ratio could be approximated as 15:32.
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