What is px to mm Converter?

Mm stands for millimeters. They are a fundamental unit of measurement used in our daily lives, from engineering to web design. PX stands for pixels, which are the digital unit of CSS. This Px to mm converter is a free, handy, and fast online tool that helps you convert pixel values into millimeters.

How to Use the PX to MM Converter

Follow the given steps and use this incredibly fantastic tool for free and get results instantly:

Step 1: Set the Pixels Per Inch(PPI) value.

Step 2: Now input the pixel value you want to convert in millimeters.

Step 3: Then press the convert button, and you will get your results in mm.

What is PPI?

PPI stands for Pixels Per Inch. It refers to pixel density, which indicates how many pixels are in one inch of space. Moreover, its value varies according to conversion relevance. 

For instance, if you work for a website, the standard value is 96PPI. Furthermore, if you engage with print media, the value is 300 PPI for high-quality print. 

You can also millimeters to pixels conversion by visiting it on our website.

Pixels to Millimeters Conversion Table (Common Sizes – 96 PPI Default)

So, below is the table in which we gather some common px to mm conversions. You can also find your desired value in this table. In addition, if you have any questions, you can check the results with the above tool. 

PX	MM
18.9	5
28.35	7.5
37.8	10
47.24	12.5
56.69	15
66.14	17.5
75.59	20
85.04	22.5
94.49	25
103.94	27.5
113.39	30
122.84	32.5
132.28	35
141.73	37.5
151.18	40
160.63	42.5
170.08	45
179.53	47.5
188.98	50
198.43	52.5
207.87	55
217.32	57.5
226.77	60
236.22	62.5
245.67	65
255.12	67.5
264.57	70
274.01	72.5
283.46	75
292.91	77.5
302.36	80
311.81	82.5
321.26	85
330.71	87.5
340.16	90
349.61	92.5
359.06	95
368.51	97.5
377.95	100
566.93	150
755.91	200
944.88	250
1133.86	300
1511.81	400
1889.76	500

How to Convert Px to mm: Unveiling the Formula

As discussed earlier in the previous tools, there is an inverse relationship between pixels, inches, cm, and mm. According to international standards, the following are the unit equivalents:

1 inch = 2.54 centimeters 

1 centimeter = 10 millimeters 

1 inch = 96 pixels (for web/CSS, default PPI)

Deriving the PX to MM Formula:

So, if we combine the above equivalencies, the formula will become:

Inches to Millimeters: Since 1 inch = 2.54 cm and 1 cm = 10 mm, then 1 inch = 2.54 cm * 10 mm/cm = 25.4 millimeters.

Pixels to Millimeters: 96 pixels (at default PPI) equals 1 inch, and 1 inch equals 25.4 millimeters.  Therefore:

96 pixels = 25.4 millimeters

Millimeters per Pixel: To find out how many millimeters are in one pixel, divide both sides by 96:

1 pixel = 25.4 millimeters / 96

Thus, the formula becomes:

Millimeters (mm) = Pixels (px) * ( 25.4 / PPI )

(using default 96 PPI for web) it will become:

mm = px * ( 25.4 / 96 )

Example Calculation

Let’s convert 478 px to mm using the web-standard 96 PPI:

Millimeters (mm) = 478px * ( 25.4 / 96 )

Millimeters (mm) ≈ 12mm

Therefore, 478 pixels is approximately equal to 12 millimeters at 96 PPI.

Must check the other feet to pixels converter for free and get results within one click.

Uses of Pixels to Millimeter Converter

This calculator has many uses due to its high demand in web development. So let’s see how it is helpful for you:

• Communicating Technical Specifications 
• Precise Layout for Print Materials
• Designing User Interfaces for Physical Devices
• Creating Digital Mockups and Prototypes