How many ppi

A higher PPI resolution results in more detail and a sharper image. Printer dots mix CMYK inks. DPI describes the amount of detail in an image based on the concentration of printer dots.

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Sign me up! Join the community. Current design contests Designers, check out these contests so you can start building your career. Designers, see opportunities. Pin It. Need a design? See all. This is calculated as the inverse of PPI.

If PPI is a measure of the density of pixels in a given length, dot pitch is the exact opposite: it's the distance between two fixed pixels or dots. Note that we are using dots and pixels interchangeably, but this might not always be the case. The dot pitch is somewhat forgotten, and its value is mostly not used due to the advancements of modern technology.

Back in the days when smartphones and even computer monitors had resolutions of less than pixels in both the vertical and horizontal direction, the usage of dot pitch was convenient and understandable. Now that our devices have a couple of thousand pixels in less than 5 inches, this makes the dot pitch values ridiculously small and hard to understand intuitively.

This was the doom of dot pitch and the rise of PPI as the new de facto standard. And that's the reason dot pitch is fading out of the mainstream scene, and why most people don't know what the dot pitch definition is anymore. Before we move to an example of using the calculator, we must mention DPI.

However, they do it in subtly different ways, or at least they used to. DPI, as we mentioned before, stands for "dots per inch" and it's analogous to PPI in the sense that they both measure how "grainy" an image is. As the name suggests, dots per inch measures the number of points that exist in the length equivalent to 1 inch on average. This value is directly related to PPI for modern digital screens since each pixel corresponds to a dot in the image, but it doesn't always have to be a correlation.

This is because, in a printer, DPI means the number of ink dots per inch, and it's independent of the resolution of the image we want to print. Let us illustrate it with an example.

Let's assume you have a printer capable of up to dpi when printing. The pixel density of the image at this size is In this case, each ink dot printed will represent several pixels of the image so you will lose resolution in the printing process. If you imagine the same scenario but with better printer capable of dpi, the situation reverses.

Now, each pixel will be composed of several dots of ink. A general recommendation is to set the DPI in the printer to an integer fraction or multiple of the original pixel density of the image to avoid the kinds of artifacts that appear when interpolating pixels and guessing color values. There is no difference when talking about screens, since the pixel is considered as the "dot" of a screen. Things are a bit more complicated when we compare PPI vs DPI outside of screens , or when we consider the comparison at a deeper level.

Answer: PPI. Share this Answer Link: help Paste this link in email, text or social media. Get a Widget for this Calculator.

Follow CalculatorSoup:. Powered by MathJax. If you previously read through our Image Resolution, Pixel Dimensions and Document Size tutorial, you already know that image resolution has absolutely nothing to do with how your image appears on your screen. In fact, a digital image, on its own, has no inherent resolution at all.

It's just pixels. It has a certain number of pixels from left to right and a certain number from top to bottom. The width and height of an image, in pixels, is known as its pixel dimensions , and that's all a computer screen cares about. The size at which an image appears on your screen depends only on two things - the pixel dimensions of the image and the display resolution of your screen.

As long as you've set your screen to its native display resolution as we discussed earlier, then an image will be displayed pixel-for-pixel. In other words, each pixel in the image will take up exactly one pixel on your screen.

For example, a x pixel image would fill a x pixel area of your screen. An pixel-wide banner on a website would appear pixels wide on the screen.

No more, no less. And no matter what you set the image's resolution to in Photoshop, whether it's 72 ppi, ppi or ppi, it will have no effect at all on how large or small the image appears on the screen.

That's because image resolution affects only one thing - the size of the image when it's printed. By setting the resolution in Photoshop, we tell the printer , not the screen, how many of the pixels in the image to squeeze into an inch of paper. The more pixels you're squeezing into every inch of paper, the smaller the image will appear when printed. And generally speaking, the more pixels you're printing per inch, the higher the print quality.

We can easily figure out how large a photo will print based on a certain image resolution. Simply take the width of the photo in pixels and divide it by your image resolution, then take the height of the photo in pixels and divide it by the image resolution as well. If we take a x pixel image, as an example, and set its resolution to 72 ppi in Photoshop, then we can divide the width and height of the photo by its resolution to determine that it will print on paper at roughly 8.

If we increase its resolution in Photoshop to, say, ppi, which is a more common print resolution, then again if we do the math, dividing the pixel width and height by ppi, we know that the photo would print at a size of 2. But what's more important to understand here is that by changing the resolution, we are not, in any way, affecting the appearance of the image on screen.

To see more clearly how resolution affects print size and not screen size, here's an image I have open in Photoshop. This little guy has also been trying to make sense of all this 72 ppi web resolution stuff, but it looks like he may be overthinking it a bit thinking child photo from Shutterstock :.

At the top of the Image Size dialog box is the Pixel Dimensions section which tells us the width and height of the image in pixels. Here we can see that my photo has both a width and height of pixels, making it a decent size for display on the web.

This is the only part of the Image Size dialog box that your computer screen cares about - the actual pixel dimensions of the image:. Below the pixel dimensions is the Document Size section which tells us how large the image would currently appear on paper if we were to print it.