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MM to PX Converter

Enter any number of millimeters and the pixels appear as you type. Press ⇄ to swap the direction, and see the step-by-step math under the result. Set the DPI: 96 for CSS and screens, 300 for print.

MillimetersFrom

PixelsTo

Decimal places

Resolution (DPI / PPI)

Common resolutions

Step-by-step calculation

How to use the MM to PX Converter

Type a value in the Millimeters box. The pixels result appears instantly.
Going the other way? Type in the Pixels box, or press the ⇄ swap button.
Set the precision with the decimal places menu and adjust the options to match your situation.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.

Millimeters to pixels formula

px = mm × DPI ÷ 25.4

Divide millimeters by 25.4 to get inches.
Multiply by the DPI to get pixels.

Example: 10 mm × 96 ÷ 25.4 = 37.7953 px.

Reverse formula: mm = px × 25.4 ÷ DPI. Example: 1,000 px at 96 DPI = 264.6 mm.

A4 at 300 DPI is 2480 × 3508 pixels; at 96 DPI it is 794 × 1123.

mm to px conversion table (1–100)

Click any row to load it into the converter.

Millimeters to pixels at 96 DPI

Millimeters	Pixels
1 mm	3.78 px
2 mm	7.559 px
3 mm	11.339 px
4 mm	15.118 px
5 mm	18.898 px
6 mm	22.677 px
7 mm	26.457 px
8 mm	30.236 px
9 mm	34.016 px
10 mm	37.795 px
11 mm	41.575 px
12 mm	45.354 px
13 mm	49.134 px
14 mm	52.913 px
15 mm	56.693 px
16 mm	60.472 px
17 mm	64.252 px
18 mm	68.031 px
19 mm	71.811 px
20 mm	75.591 px
21 mm	79.37 px
22 mm	83.15 px
23 mm	86.929 px
24 mm	90.709 px
25 mm	94.488 px
26 mm	98.268 px
27 mm	102.047 px
28 mm	105.827 px
29 mm	109.606 px
30 mm	113.386 px
31 mm	117.165 px
32 mm	120.945 px
33 mm	124.724 px
34 mm	128.504 px
35 mm	132.283 px
36 mm	136.063 px
37 mm	139.843 px
38 mm	143.622 px
39 mm	147.402 px
40 mm	151.181 px
41 mm	154.961 px
42 mm	158.74 px
43 mm	162.52 px
44 mm	166.299 px
45 mm	170.079 px
46 mm	173.858 px
47 mm	177.638 px
48 mm	181.417 px
49 mm	185.197 px
50 mm	188.976 px
51 mm	192.756 px
52 mm	196.535 px
53 mm	200.315 px
54 mm	204.094 px
55 mm	207.874 px
56 mm	211.654 px
57 mm	215.433 px
58 mm	219.213 px
59 mm	222.992 px
60 mm	226.772 px
61 mm	230.551 px
62 mm	234.331 px
63 mm	238.11 px
64 mm	241.89 px
65 mm	245.669 px
66 mm	249.449 px
67 mm	253.228 px
68 mm	257.008 px
69 mm	260.787 px
70 mm	264.567 px
71 mm	268.346 px
72 mm	272.126 px
73 mm	275.906 px
74 mm	279.685 px
75 mm	283.465 px
76 mm	287.244 px
77 mm	291.024 px
78 mm	294.803 px
79 mm	298.583 px
80 mm	302.362 px
81 mm	306.142 px
82 mm	309.921 px
83 mm	313.701 px
84 mm	317.48 px
85 mm	321.26 px
86 mm	325.039 px
87 mm	328.819 px
88 mm	332.598 px
89 mm	336.378 px
90 mm	340.157 px
91 mm	343.937 px
92 mm	347.717 px
93 mm	351.496 px
94 mm	355.276 px
95 mm	359.055 px
96 mm	362.835 px
97 mm	366.614 px
98 mm	370.394 px
99 mm	374.173 px
100 mm	377.953 px

Pixels to millimeters at 96 DPI

Pixels	Millimeters
1 px	0.265 mm
2 px	0.529 mm
3 px	0.794 mm
4 px	1.058 mm
5 px	1.323 mm
6 px	1.587 mm
7 px	1.852 mm
8 px	2.117 mm
9 px	2.381 mm
10 px	2.646 mm
11 px	2.91 mm
12 px	3.175 mm
13 px	3.44 mm
14 px	3.704 mm
15 px	3.969 mm
16 px	4.233 mm
17 px	4.498 mm
18 px	4.763 mm
19 px	5.027 mm
20 px	5.292 mm
21 px	5.556 mm
22 px	5.821 mm
23 px	6.085 mm
24 px	6.35 mm
25 px	6.615 mm
26 px	6.879 mm
27 px	7.144 mm
28 px	7.408 mm
29 px	7.673 mm
30 px	7.938 mm
31 px	8.202 mm
32 px	8.467 mm
33 px	8.731 mm
34 px	8.996 mm
35 px	9.26 mm
36 px	9.525 mm
37 px	9.79 mm
38 px	10.054 mm
39 px	10.319 mm
40 px	10.583 mm
41 px	10.848 mm
42 px	11.112 mm
43 px	11.377 mm
44 px	11.642 mm
45 px	11.906 mm
46 px	12.171 mm
47 px	12.435 mm
48 px	12.7 mm
49 px	12.965 mm
50 px	13.229 mm
51 px	13.494 mm
52 px	13.758 mm
53 px	14.023 mm
54 px	14.287 mm
55 px	14.552 mm
56 px	14.817 mm
57 px	15.081 mm
58 px	15.346 mm
59 px	15.61 mm
60 px	15.875 mm
61 px	16.14 mm
62 px	16.404 mm
63 px	16.669 mm
64 px	16.933 mm
65 px	17.198 mm
66 px	17.462 mm
67 px	17.727 mm
68 px	17.992 mm
69 px	18.256 mm
70 px	18.521 mm
71 px	18.785 mm
72 px	19.05 mm
73 px	19.315 mm
74 px	19.579 mm
75 px	19.844 mm
76 px	20.108 mm
77 px	20.373 mm
78 px	20.637 mm
79 px	20.902 mm
80 px	21.167 mm
81 px	21.431 mm
82 px	21.696 mm
83 px	21.96 mm
84 px	22.225 mm
85 px	22.49 mm
86 px	22.754 mm
87 px	23.019 mm
88 px	23.283 mm
89 px	23.548 mm
90 px	23.812 mm
91 px	24.077 mm
92 px	24.342 mm
93 px	24.606 mm
94 px	24.871 mm
95 px	25.135 mm
96 px	25.4 mm
97 px	25.665 mm
98 px	25.929 mm
99 px	26.194 mm
100 px	26.458 mm

Common values

Millimeters	Pixels	Example
1 mm	3.78 px	1 mm
5 mm	18.9 px	5 mm
10 mm	37.8 px	1 cm
25.4 mm	96 px	1 inch
50 mm	188.98 px	50 mm
85.6 mm	323.53 px	Credit card width
100 mm	377.95 px	10 cm
148 mm	559.37 px	A5 width
210 mm	793.7 px	A4 width
297 mm	1,122.52 px	A4 height

About millimeters and pixels

Millimeters (mm). The millimeter is one thousandth of a meter. Print layouts and paper sizes such as A4 (210 × 297 mm) use millimeters.

Pixels (px). A CSS pixel is defined as 1/96 of an inch, regardless of the screen. Physical screen pixels can be smaller (high-DPI or Retina displays use 2–3 device pixels per CSS pixel).

Frequently asked questions

How many pixels is 1 mm?

3.78 px at 96 DPI, 11.81 px at 300 DPI and 2.83 px at 72 DPI.

How many pixels is A4?

A4 (210 × 297 mm) is 794 × 1123 px at 96 DPI and 2480 × 3508 px at 300 DPI.

What DPI should I use for print?

300 DPI is standard for quality printing; 150 DPI is fine for large posters viewed from a distance.

What is 100 millimeters in pixels?

100 mm is 377.953 px (10 cm).

Is this converter free and private?

Yes. It is free with no sign-up, and every calculation runs in your browser, so nothing you type is sent to a server.

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