1:1 Aspect Ratio Calculator Explained

By Last updated: January 14, 2024

1:1 Aspect Ratio Calculator

What is a 1:1 aspect ratio?

The 1:1 aspect ratio is a square format primarily used for images and videos, particularly on social media platforms such as TikTok, Instagram, and Facebook. This aspect ratio is commonly found on small devices like smartwatches but is not on larger displays like monitors and televisions.

This 1:1 ratio is 25% shorter than the 4:5 portrait aspect ratio and 43.8% taller than the wide 16:9 aspect ratio used for daily displays, photos, and video content.[1]

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

The aspect ratio has a standard format of 1:1 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 "one-by-one" or "one-to-one" aspect ratio.

1:1 ratio formula

You can use the one-by-one ratio formula to check if an image or display has a 1:1 aspect ratio. First, determine the width and height of your image, video, or screen in centimeters, inches, or pixels. If the width and height are the same, or if the result of dividing the width by the height equals 1.00, then it has a 1:1 aspect ratio.

$${Ratio} = \frac{Width}{Height} = \frac{1}{1} = 1$$

And width always equals height.

$${W} = {H}$$

Common 1:1 resolutions

Here are the 1:1 resolutions you frequently find in photos and videos on social media platforms.

WidthHeightStandardPlatform
3636ProfileFacebook (Featured Phone)
110110ProfileInstagram
176176ProfileFacebook (Computer)
196196ProfileFacebook (Smartphones) [2]
640640VideoTiktok
10801080Post, ReelInstagram
Table 1: everyday 1x1 square photos and videos.

Common 1:1 screen sizes

Here are the width, height, and diagonal of various 1:1 image, video, or screen sizes in inches and centimeters.

1:1 Screen Sizing
1:1 aspect ratio screen sizing
DiagonalWidthHeightPixels per inch
1″
2.54 cm
0.71″
1.8 cm
0.71″
1.8 cm
1,527.35 ppi
2″
5.08 cm
1.41″
3.59 cm
1.41″
3.59 cm
763.68 ppi
3″
7.62 cm
2.12″
5.39 cm
2.12″
5.39 cm
509.12 ppi
4″
10.16 cm
2.83″
7.18 cm
2.83″
7.18 cm
381.84 ppi
5″
12.7 cm
3.54″
8.98 cm
3.54″
8.98 cm
305.47 ppi
6″
15.24 cm
4.24″
10.78 cm
4.24″
10.78 cm
254.56 ppi
7″
17.78 cm
4.95″
12.57 cm
4.95″
12.57 cm
218.19 ppi
8″
20.32 cm
5.66″
14.37 cm
5.66″
14.37 cm
190.92 ppi
9″
22.86 cm
6.36″
16.16 cm
6.36″
16.16 cm
169.71 ppi
10″
25.4 cm
7.07″
17.96 cm
7.07″
17.96 cm
152.74 ppi
11″
27.94 cm
7.78″
19.76 cm
7.78″
19.76 cm
138.85 ppi
12″
30.48 cm
8.49″
21.55 cm
8.49″
21.55 cm
127.28 ppi
13″
33.02 cm
9.19″
23.35 cm
9.19″
23.35 cm
117.49 ppi
14″
35.56 cm
9.9″
25.14 cm
9.9″
25.14 cm
109.1 ppi
15″
38.1 cm
10.61″
26.94 cm
10.61″
26.94 cm
101.82 ppi
16″
40.64 cm
11.31″
28.74 cm
11.31″
28.74 cm
95.46 ppi
17″
43.18 cm
12.02″
30.53 cm
12.02″
30.53 cm
89.84 ppi
18″
45.72 cm
12.73″
32.33 cm
12.73″
32.33 cm
84.85 ppi
19″
48.26 cm
13.44″
34.12 cm
13.44″
34.12 cm
80.39 ppi
20″
50.8 cm
14.14″
35.92 cm
14.14″
35.92 cm
76.37 ppi
21″
53.34 cm
14.85″
37.72 cm
14.85″
37.72 cm
72.73 ppi
22″
55.88 cm
15.56″
39.51 cm
15.56″
39.51 cm
69.43 ppi
23″
58.42 cm
16.26″
41.31 cm
16.26″
41.31 cm
66.41 ppi
24″
60.96 cm
16.97″
43.11 cm
16.97″
43.11 cm
63.64 ppi
25″
63.5 cm
17.68″
44.9 cm
17.68″
44.9 cm
61.09 ppi
26″
66.04 cm
18.38″
46.7 cm
18.38″
46.7 cm
58.74 ppi
27″
68.58 cm
19.09″
48.49 cm
19.09″
48.49 cm
56.57 ppi
28″
71.12 cm
19.8″
50.29 cm
19.8″
50.29 cm
54.55 ppi
29″
73.66 cm
20.51″
52.09 cm
20.51″
52.09 cm
52.67 ppi
30″
76.2 cm
21.21″
53.88 cm
21.21″
53.88 cm
50.91 ppi
32″
81.28 cm
22.63″
57.47 cm
22.63″
57.47 cm
47.73 ppi
34″
86.36 cm
24.04″
61.07 cm
24.04″
61.07 cm
44.92 ppi
40″
101.6 cm
28.28″
71.84 cm
28.28″
71.84 cm
38.18 ppi
42″
106.68 cm
29.7″
75.43 cm
29.7″
75.43 cm
36.37 ppi
43″
109.22 cm
30.41″
77.23 cm
30.41″
77.23 cm
35.52 ppi
48″
121.92 cm
33.94″
86.21 cm
33.94″
86.21 cm
31.82 ppi
50″
127 cm
35.36″
89.8 cm
35.36″
89.8 cm
30.55 ppi
55″
139.7 cm
38.89″
98.78 cm
38.89″
98.78 cm
27.77 ppi
58″
147.32 cm
41.01″
104.17 cm
41.01″
104.17 cm
26.33 ppi
60″
152.4 cm
42.43″
107.76 cm
42.43″
107.76 cm
25.46 ppi
65″
165.1 cm
45.96″
116.74 cm
45.96″
116.74 cm
23.5 ppi
70″
177.8 cm
49.5″
125.72 cm
49.5″
125.72 cm
21.82 ppi
75″
190.5 cm
53.03″
134.7 cm
53.03″
134.7 cm
20.36 ppi
77″
195.58 cm
54.45″
138.3 cm
54.45″
138.3 cm
19.84 ppi
83″
210.82 cm
58.69″
149.07 cm
58.69″
149.07 cm
18.4 ppi
85″
215.9 cm
60.1″
152.66 cm
60.1″
152.66 cm
17.97 ppi
86″
218.44 cm
60.81″
154.46 cm
60.81″
154.46 cm
17.76 ppi
97″
246.38 cm
68.59″
174.22 cm
68.59″
174.22 cm
15.75 ppi
98″
248.92 cm
69.3″
176.01 cm
69.3″
176.01 cm
15.59 ppi
Table 2: Diagonal, width, and height of one-by-one screen sizes.

FAQs

How do I calculate the 1:1 aspect ratio?

The 1:1 aspect ratio is a screen or image format that proportionally contains the same horizontal and vertical units. It can be calculated by dividing the width by height and getting a value of 1.00.

For example, the ratio between the width and height of the 36 x 36 and 176 x 176 resolutions equals 1.00.

How to use 1:1 aspect ratio calculator by Calculator Hub?

Our 1:1 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 1:1 aspect ratio. For instance, if you enter a width of 640 pixels, the calculator will calculate a height of 640 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.

1:1 Aspect Ratio Calculator

1:1 Aspect Ratio Calculator App

About this app

Use our 1:1 aspect ratio calculator to help you accurately resize or scale images, video, or screen resolution to perfect 1 by 1 or square 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. ⬆️ Pages profile picture and cover photo dimensions | Facebook Help Center. Facebook.com. Published 2022. Accessed January 16, 2024.

    https://www.facebook.com/help/125379114252045