16:9 Aspect Ratio Calculator Explained

By Last updated: July 02, 2023

16:9 Aspect Ratio Calculator

What is a 16:9 aspect ratio?

Common Aspect Ratios

The 16:9 aspect ratio is the current most popular standard format for landscape images, videos, TV shows, and films. It's also the ratio of the dimensions for most HDTV[1], projectors, and computer screens.

The aspect ratio has a standard format as W:H or WxH, where W is the width, and H is the height of an image, screen, or container. In digital space, the measurement unit is in pixels. You can pronounce it "sixteen-by-nine" or "sixteen-to-nine" aspect ratio.

16:9 ratio formula

You can use the following formula and steps to check if an image or display has a 16:9 aspect ratio. First, determine the width and height of your image, video, or screen in centimeters, inches, or pixels. Then, divide the width by the height. If the answer is 1.78 (1.77778), it has a 16:9 aspect ratio.

$${Ratio} = \frac{Width}{Height} = \frac{16}{9} = 1.77778$$

To find a new width (W) from a desired height (H):

$${W} = {H} \times 1.77778$$

To find a new height (H) from a desired width (W):

$${H} = \frac{W}{1.77778} = {W} \times {0.5625}$$

Example 1: Calculating a new image height.

For instance, suppose you wish to compress an image by reducing its resolution so you can easily share it on the web. The original dimensions are 1920 pixels horizontally and 1080 pixels vertically. What is the new height of the image if you want the new compressed image's width at 320 pixels without stretching and distortion?

Solutions

Before calculating the new height, you first need to calculate the original image aspect ratio:

${Ratio} = \frac{Width}{Height} = \frac{1,920}{1,280} = 1.77778$

By knowing the desired width and the image ratio, you can calculate the new height by using the 16:9 formula as follows:

${New Height} = \frac{Width}{Ratio} = \frac{320}{1.77778} = 180$
16:9 Aspect Ratio Scaling
Different sizes and resolutions with the same 16:9 aspect ratio

Common 16:9 resolutions

Here is the 16:9 resolution cheat sheet you can reference to identify the 16:9 resolutions on images, videos, televisions, tablets, projectors, and other devices.

Width (px)Height (px)Standard
256144144p video
426240240p video
640360nHD
854480FWVGA
1024576WSVGA
1280720HD (High Definition)
1366768WXGA or FWXGA
1600900WSXGA
19201080FHD (Full HD)
25601440QHD
384021604K UHD[2]
512028805K UHD
768043208K UHD[3]
Table 1: common resolutions of 16 by 9 content and display.

Common 16:9 screen sizes

Here are the dimensions, in inches and centimeters, for everyday 16:9 display and printing sizes with diagonals ranging from 1 to 98 inches.

16:9 ratio sizing information
DiagonalWidthHeight
1″
2.54 cm
0.87″
2.21 cm
0.49″
1.25 cm
2″
5.08 cm
1.74″
4.43 cm
0.98″
2.49 cm
3″
7.62 cm
2.61″
6.64 cm
1.47″
3.74 cm
4″
10.16 cm
3.49″
8.86 cm
1.96″
4.98 cm
5″
12.7 cm
4.36″
11.07 cm
2.45″
6.23 cm
6″
15.24 cm
5.23″
13.28 cm
2.94″
7.47 cm
7″
17.78 cm
6.1″
15.5 cm
3.43″
8.72 cm
8″
20.32 cm
6.97″
17.71 cm
3.92″
9.96 cm
9″
22.86 cm
7.84″
19.92 cm
4.41″
11.21 cm
10″
25.4 cm
8.72″
22.14 cm
4.9″
12.45 cm
11″
27.94 cm
9.59″
24.35 cm
5.39″
13.7 cm
12″
30.48 cm
10.46″
26.57 cm
5.88″
14.94 cm
13″
33.02 cm
11.33″
28.78 cm
6.37″
16.19 cm
14″
35.56 cm
12.2″
30.99 cm
6.86″
17.43 cm
15″
38.1 cm
13.07″
33.21 cm
7.35″
18.68 cm
16″
40.64 cm
13.95″
35.42 cm
7.84″
19.92 cm
17″
43.18 cm
14.82″
37.63 cm
8.33″
21.17 cm
18″
45.72 cm
15.69″
39.85 cm
8.82″
22.41 cm
19″
48.26 cm
16.56″
42.06 cm
9.31″
23.66 cm
20″
50.8 cm
17.43″
44.28 cm
9.81″
24.91 cm
21″
53.34 cm
18.3″
46.49 cm
10.3″
26.15 cm
22″
55.88 cm
19.17″
48.7 cm
10.79″
27.4 cm
23″
58.42 cm
20.05″
50.92 cm
11.28″
28.64 cm
24″
60.96 cm
20.92″
53.13 cm
11.77″
29.89 cm
25″
63.5 cm
21.79″
55.35 cm
12.26″
31.13 cm
26″
66.04 cm
22.66″
57.56 cm
12.75″
32.38 cm
27″
68.58 cm
23.53″
59.77 cm
13.24″
33.62 cm
28″
71.12 cm
24.4″
61.99 cm
13.73″
34.87 cm
29″
73.66 cm
25.28″
64.2 cm
14.22″
36.11 cm
30″
76.2 cm
26.15″
66.41 cm
14.71″
37.36 cm
32″
81.28 cm
27.89″
70.84 cm
15.69″
39.85 cm
34″
86.36 cm
29.63″
75.27 cm
16.67″
42.34 cm
40″
101.6 cm
34.86″
88.55 cm
19.61″
49.81 cm
42″
106.68 cm
36.61″
92.98 cm
20.59″
52.3 cm
43″
109.22 cm
37.48″
95.19 cm
21.08″
53.55 cm
48″
121.92 cm
41.84″
106.26 cm
23.53″
59.77 cm
50″
127 cm
43.58″
110.69 cm
24.51″
62.26 cm
55″
139.7 cm
47.94″
121.76 cm
26.96″
68.49 cm
58″
147.32 cm
50.55″
128.4 cm
28.44″
72.23 cm
60″
152.4 cm
52.29″
132.83 cm
29.42″
74.72 cm
65″
165.1 cm
56.65″
143.9 cm
31.87″
80.94 cm
70″
177.8 cm
61.01″
154.97 cm
34.32″
87.17 cm
75″
190.5 cm
65.37″
166.04 cm
36.77″
93.39 cm
77″
195.58 cm
67.11″
170.46 cm
37.75″
95.89 cm
83″
210.82 cm
72.34″
183.75 cm
40.69″
103.36 cm
85″
215.9 cm
74.08″
188.17 cm
41.67″
105.85 cm
86″
218.44 cm
74.96″
190.39 cm
42.16″
107.09 cm
97″
246.38 cm
84.54″
214.74 cm
47.56″
120.79 cm
98″
248.92 cm
85.41″
216.95 cm
48.05″
122.04 cm
Table 2: Diagonal, width, and height of different 16 by 9 screen sizes

FAQs

How do I calculate the 16:9 aspect ratio?

The 16:9 aspect ratio is a widescreen format that contains 16 units horizontally for every nine units vertically. It can be calculated by dividing the width by height and getting a value of 1.78 (1.7777778).

For example, the ratio between the width and height of the HD (1280 x 720), Full HD (1920 x 1080), and 4K UHD (3840 × 2160) resolutions are equal to 1.78.

16:9 Aspect Ratio Calculator

16:9 Aspect Ratio Calculator App

About this app

Use our 16:9 aspect ratio calculator to help you accurately resize or scale images, video, or screen resolution to perfect 16 by 9 dimensions. You will also learn more about the aspect ratio, formula, and calculation examples.

App availability

You can use the calculator for free as a PWA web app online or install it locally on any modern operating system, including Android, iOS, Windows 11/10, and macOS.

16:9 Aspect Ratio Calculator QR
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App changelog

Version 1.2
  • Fix conversion from inch to centimeters in the table of screen sizing.
Version 1.1
  • Add a screen diagonal parameter to find pixel density in PPI and screen width and height in inches and centimeters.
  • Add a screen sizing table showing width, height, and pixel density for screen sizes ranging from 1 inch to 98 inches in diagonal.
Version 1.0
  • Automatically calculate width or height when you change any of those values.
  • A summary of resolution information along with virtualized graphics.
  • Add scaling table - show you resolutions that scale well with the one you entered from 5% to 200%.
  • Basic customization features.

References

3 Sources

  1. ⬆️ The Difference Between HD and 4K TVs | LG UK. LG UK. Published 2019. Accessed January 22, 2024.

    https://www.lg.com/uk/lg-experience/lg-lab/4k-tv-vs-hd-tv-what-s-the-difference-/
  2. ⬆️ What is 4K TV? | What resolutions is 4K? | Samsung UK. Published November 25, 2023. Accessed January 22, 2024.

    https://www.samsung.com/uk/tvs/tv-buying-guide/what-is-4k-tv/
  3. ⬆️ 4K vs 8K TVs: the Visual Differences Plus Pros and Cons. Tcl.com. Published February 21, 2023. Accessed January 22, 2024.

    https://www.tcl.com/global/en/blog/4k-vs-8k-tvs--the-visual-difference-plus-pros-and-cons