Pixels to cm

If you work in the world of design or photography, it is likely that more than once you've needed a pixel to cm converter and vice versa, right? With our calculator you already have a very easy to use one for this task.

Its operation is very simple. All you have to do is choose whether you want to convert from pixels to centimeters or from cm to px, type the dimensions and press the calculate button to obtain the equivalence.

Pixels per inch and other considerations

It is likely that if you are looking for information on how to go from pixels to cm, you have seen in many places the acronym DPI or PPI - what do they mean?

DPI stands for Dots Per Inch while PPI refers to pixels per inch. Both terms refer to resolution and are exactly the same. In some places you may also see PPI (Points Per Inch) but again, it refers to the same concepts.

When we talk about pixels per inch we are referring to the resolution, i.e., the number of pixels within one inch or 2.54 centimeters.

From the above we deduce that the more pixels there are per inch, the higher the quality of the image. The clear example is the latest generation of tablet and mobile screens with resolutions of up to 4k, offering a very high pixel density per inch with which we obtain a degree of definition that is difficult to surpass.

Resolution for printing photographs

If you want to print a photo you have on your computer, it is advisable to at least do it with a resolution of 150 pixels per inch to obtain acceptable results. From 300 dpi we achieve better results.

How to convert from pixels to cm

If you want to know how to go from pixels to centimetersWe are going to explain it step by step.

At the outset, we must have the following data to be able to make the conversion:

  • Height and width of the photo in pixels
  • Resolution in pixels per inch

Then we simply have to perform the following operations (which you can solve with our division calculator):

  1. High/ppi
  2. Width/ppi

Once we have made the above divisions, we have to pass the measurement in inches to centimeters. To do this you can use the calculator that you will find in the link that we have left or divide each value by 0.393701.

Por ejemplo, vamos a pasar de píxeles a centímetros una fotografía que tenemos de 1920x1080 y 300 píxeles por pulgada, ¿a qué tamaño podemos imprimir la foto para que no pierda calidad? Veamos:

  • 1920/300/0.393701 = 16.26 centimeters
  • 1080/300/0.393701 = 9.14 centimeters

If we print the photo at that size as maximum, we will maintain the quality. Anything larger than this size will result in a loss of definition.

How to convert from cm to pixels

For convert from cm to pixels we have to do the opposite operation to the previous one, that is:

  • Height (cm) x dpi x 0.393701
  • Width (cm) x dpi x 0.393701

Converting from centimeters to pixels is less common, but if you need it, we offer you the possibility to make the conversion.

How many pixels are one centimeter?

The answer to this question depends on the resolution in dpi we are going to work with. Let's see some examples:

  • 1 cm at 72 dpi = 28.36 px
  • 1 cm at 150 dpi = 59.06 px
  • 1 cm at 300 dpi = 118.11 px

As you can see, as the concentration of pixels per inch goes up, the equivalence of 1 centimeter in pixels.

¿Cuántos píxeles son 10x15 cm?

In case you already have a fotografía impresa de 10x15 cm and you want to know how many pixels it is, we can make the calculation starting from a base resolution of 300 dpi, which is the recommended value for printing photos.

With these data, la foto de 10x15 cm equivale a 1181,1x1771,65 píxeles.

How is a pixel measured?

Photo to measure pixels

If after reading the whole article you are still wondering how to measure a pixel, here we clarify it for you.

The pixel cannot be measured in centimeters or millimeters, it has no equivalence as such.To make it clear, imagine a photograph in which we place on top a grid exactly like the one in the photo above these lines.

Each grid cell would be a pixel.. Depending on the pixel density per inch we assign, a pixel will be larger or smaller.

For example, if the photo has a resolution of 100ppi, it means that there are 100 pixels in each 2.54 square centimeter area (which is equivalent to one inch). In that case, the pixel will measure 2.54 millimeters, but the moment the ppi density changes, it will also change the size of a pixel.

20 thoughts on “Píxeles a cm”

    • Hi Vicky,

      That number is the conversion factor that we use to convert from inches to centimeters and that we will need to convert pixels to cm. That is, 1 centimeter is equal to 0.393701 inches.


    • Hello Joan,

      If we have understood you correctly, the resolution is 4096ppi, so with that size in pixels, the image will measure 1.27cm x 1.27cm.


  1. Hello I have to project a video on a screen 500cm wide x 300cm high, in a theater, I'm making the video in Sony Vegas, in what resolution do you recommend me to render the video to be seen with good quality on the projector?

    • Hello Diego,

      You don't tell us the characteristics of the projector so we can't help you. In any case, we recommend that you render the video at the highest resolution that the projector will accept to get the best possible definition.

      Note that rendering the video at 4K if the projector is Full HD will not give you anything, it will take longer to render the video and the file will also take up more space.


  2. hello, good afternoon, I am writing to see if you can help me; I uploaded a book to Amazon, and when I saw the review I got a message that says textually; The size of your screen is less than 1200 px by 600 we recommend that you reconfigure the window size or use a larger device".
    That refers to pixels? my screen is 30 cm long x 23 cm high, is it because it is too small?
    Thank you!

    • Hello Judith,

      Centimeters have nothing to do with pixels. You can have a cell phone screen with more pixels than a 50-inch television.

      If you got that message on Amazon, simply logging in from a device that meets that resolution requirement is sufficient.


  3. Hi! I need to take some measurements from a photo, I made a screen print and pasted it in paint 3D, how do I know in what resolution is that screen print in paint 3D? thanks!!!!

    • Hello,

      Normally, the resolution of the screen print is the one you have configured on your computer.


  4. Thank you! I need to make a child size photo (2.5cm x3cm) with 100KB resolution to send by Internet, and in photoshop it tells me a dialog box RESOLUTION: ______ Pixels/centimeter.
    When I set it to 50 it tells me that the image size is 109.9 KB, but when I save in JEPG, it opens the image very small.
    WHAT DO I DO????

    • Hello,

      A resolution of 50 is too low. What format do you export it in? I tell you this because although the resolution influences the size of the photo, there are formats such as PNG that usually occupy much more than JPEG, so at the same resolution, JPEG will always occupy less and will allow you to increase the pixels per inch.

      Anyway, I don't understand the 100KB limitation for sending over the Internet, since nowadays any free email client will accept files up to 20MB without any problem.


  5. Hi, very good info. My doubt is the following: if pixels and cm are not convertible, why in Photoshop when one enters the dimensions of an image, for example, 900px by 900px the size of the document is 31.75 x 31.75 cm?

    • Hello Gonzalo,

      The size of the document is determined by the pixel density per inch. For equal pixels, the higher the pixel density per inch, the smaller the photo will be when printed because we are concentrating more pixels in the same space.


    • Hello Edu,

      For best results (300 dpi resolution), your image should be 29528×20669 pixels.

      As the image in centimeters that you have sent us is quite large and to see it well we will have to go far away, you can lower the resolution to 150dpi, which will give you a size of 14764×10335 pixels.

      Surely the resolution can be lowered further but without knowing the type of photo, print media and the printer you are going to use, it is difficult to give you more references.


  6. mi cámara me da imágenes de 6000px x 4000px (72ppp), para pasarlas a 300ppp e imprimirlas en tamaño de 10cm x 15cm, que medida debería tener?

    • Hola Cinthya,

      Con esa resolución no vas a tener problema para imprimir una foto de 10x15cm a 300ppp. Hemos hecho la conversión de tu resolución inicial a 300pp y cm, y el tamaño resultante sería de 50,8cm x 33,87cm, que es muy superior a los 10x15cm que necesitas.


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