4:5 Aspect Ratio Calculator Explained

By Last updated: January 14, 2024

4:5 Aspect Ratio Calculator

What is a 4:5 aspect ratio?

The 4:5 aspect ratio is a portrait ratio used for photos and videos commonly seen on social media platforms like Facebook[1] and Instagram[2]. It's also a portrait-oriented of the landscape 5:4 aspect ratio previously found on older televisions.

The 4:5 ratio is 25% taller than the 1:1 square aspect ratio and 46.66% shorter than the 9:16 tall aspect ratio.

1:1 vs 4:5 vs 9:16 aspect ratio
1:1 vs 4:5 vs 9:16 aspect ratio

The aspect ratio has a standard format of 4:5 or W:H, 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 "four-by-five" or "four-to-five" aspect ratio.

4:5 ratio formula

You can use the four-by-five ratio formula to check if an image or display has a 4:5 aspect ratio. First, you must 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 0.8, then it has a 4:5 aspect ratio.

$${Ratio} = \frac{Width}{Height} = \frac{4}{5} = 0.8$$

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

$${W} = {H} \times 0.8$$

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

$${H} = \frac{W}{0.8} = {W} \times {1.25}$$

Common 4:5 resolutions

Here are the 4:5 resolutions you frequently find on photos, videos, digital cameras, and monitors.

WidthHeightStandardPlatform
320400Photo SharingInstagram[2]
640800
9601,200
8641080
9601,200
10801350Photo SharingInstagram
1,0241,280Vertical SXGADisplay
1,2801,600
2,0482,560Vertical QSXGADisplay
Table 1: Common 4x5 resolutions and applications.

Common 4:5 screen sizes

Here are the width, height, and diagonal of various 4:5 image, video, or screen sizes in inches and centimeters.

4:5 Screen Sizing
4:5 aspect ratio screen sizing
DiagonalWidthHeight
1″
2.54 cm
0.62″
1.59 cm
0.78″
1.98 cm
2″
5.08 cm
1.25″
3.17 cm
1.56″
3.97 cm
3″
7.62 cm
1.87″
4.76 cm
2.34″
5.95 cm
4″
10.16 cm
2.5″
6.35 cm
3.12″
7.93 cm
5″
12.7 cm
3.12″
7.93 cm
3.9″
9.92 cm
6″
15.24 cm
3.75″
9.52 cm
4.69″
11.9 cm
7″
17.78 cm
4.37″
11.11 cm
5.47″
13.88 cm
8″
20.32 cm
5″
12.69 cm
6.25″
15.87 cm
9″
22.86 cm
5.62″
14.28 cm
7.03″
17.85 cm
10″
25.4 cm
6.25″
15.87 cm
7.81″
19.83 cm
11″
27.94 cm
6.87″
17.45 cm
8.59″
21.82 cm
12″
30.48 cm
7.5″
19.04 cm
9.37″
23.8 cm
13″
33.02 cm
8.12″
20.63 cm
10.15″
25.78 cm
14″
35.56 cm
8.75″
22.21 cm
10.93″
27.77 cm
15″
38.1 cm
9.37″
23.8 cm
11.71″
29.75 cm
16″
40.64 cm
10″
25.39 cm
12.49″
31.73 cm
17″
43.18 cm
10.62″
26.97 cm
13.27″
33.72 cm
18″
45.72 cm
11.24″
28.56 cm
14.06″
35.7 cm
19″
48.26 cm
11.87″
30.15 cm
14.84″
37.68 cm
20″
50.8 cm
12.49″
31.73 cm
15.62″
39.67 cm
21″
53.34 cm
13.12″
33.32 cm
16.4″
41.65 cm
22″
55.88 cm
13.74″
34.91 cm
17.18″
43.63 cm
23″
58.42 cm
14.37″
36.49 cm
17.96″
45.62 cm
24″
60.96 cm
14.99″
38.08 cm
18.74″
47.6 cm
25″
63.5 cm
15.62″
39.67 cm
19.52″
49.59 cm
26″
66.04 cm
16.24″
41.25 cm
20.3″
51.57 cm
27″
68.58 cm
16.87″
42.84 cm
21.08″
53.55 cm
28″
71.12 cm
17.49″
44.43 cm
21.86″
55.54 cm
29″
73.66 cm
18.12″
46.02 cm
22.65″
57.52 cm
30″
76.2 cm
18.74″
47.6 cm
23.43″
59.5 cm
32″
81.28 cm
19.99″
50.78 cm
24.99″
63.47 cm
34″
86.36 cm
21.24″
53.95 cm
26.55″
67.44 cm
40″
101.6 cm
24.99″
63.47 cm
31.23″
79.34 cm
42″
106.68 cm
26.24″
66.64 cm
32.8″
83.3 cm
43″
109.22 cm
26.86″
68.23 cm
33.58″
85.29 cm
48″
121.92 cm
29.99″
76.16 cm
37.48″
95.2 cm
50″
127 cm
31.23″
79.34 cm
39.04″
99.17 cm
Table 2: Diagonal, width, and height of 4 by 5 screen sizes.

FAQs

How do I calculate the 4:5 aspect ratio?

The 5:4 aspect ratio is a screen or image format that proportionally contains four units horizontally for every five vertically. It can be calculated by dividing the width by height and getting a value of 0.8.

For example, the ratio between the width and height of the SXGA (1,280 x 1,024) and QSXGA (2,560 x 2,0248) resolutions equals 0.8.

How to use 4:5 aspect ratio calculator by Calculator Hub?

Our 4:5 aspect ratio calculator is easy to use. You only need to input one dimension (width or height), and the calculator will automatically calculate the other dimension based on the 4:5 aspect ratio. For instance, if you enter a width of 800 pixels, the calculator will calculate a height of 1,000 pixels.

On top of that, by entering a screen diagonal, you will also get additional information, including the screen's width, height, pixel density, and more.

4:5 Aspect Ratio Calculator

4:5 Aspect Ratio Calculator App

About this app

Use our 4:5 aspect ratio calculator to help you accurately resize or scale images, video, or screen resolution to perfect 4 by 5 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.

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References

2 Sources

  1. ⬆️ Best practices for aspect ratios across placements | Meta Business Help Center. Meta Business Help Center. Published 2024. Accessed January 16, 2024.

    https://www.facebook.com/business/help/103816146375741?id=271710926837064
  2. ⬆️ ⬆️ Help Center. Instagram.com. Published 2022. Accessed January 17, 2024.

    https://help.instagram.com/1631821640426723