Conversion Form

PX
IN

About the Unit

Pixel (px): A pixel is the smallest visible measurement unit on a digital screen, commonly used to describe the resolution and dimensions of graphical elements and text. In a CSS context, the pixel is an absolute unit, but its perception can vary depending on the device's pixel density (such as on Retina displays). Although it is a fixed unit, the pixel value in CSS is standardized to ensure consistency across devices with different resolutions. For example, an element with 100px width will always render with 100 pixels of width on the screen, but on devices with higher pixel density, the content display may appear sharper. The px unit is widely used in graphical interface design, typography, and other visual properties, being the predominant choice in many web design approaches.

Pro Tip: pxin

1in = 96px. Convert px to inches for print measurements.

Quick Reference: Unit Conversion by Tens

PXIN
10px0.104167in
20px0.208333in
30px0.3125in
40px0.416667in
50px0.520833in
60px0.625in
70px0.729167in
80px0.833333in
90px0.9375in
100px1.041667in
110px1.145833in
120px1.25in
130px1.354167in
140px1.458333in
150px1.5625in
160px1.666667in
170px1.770833in
180px1.875in
190px1.979167in
200px2.083333in
210px2.1875in
220px2.291667in
230px2.395833in
240px2.5in
250px2.604167in

Live Unit Preview

See how different CSS units affect the size of the box below:

10px

10rem

10em

10%

10vw

10vh

Common Mistake

1in = 96px. Convert px to inches for print measurements.

Real Code Example

/* Mobile-first card with px → in */
.card {
  padding: 0px;     /* undefinedin */
  font-size: 1.5rem;
  width: min(90vw, 40ch);
}

Frequently Asked Questions About PX

When should I use px instead of px?

Use px for pixel-perfect control in fixed layouts.

How many px is 1px?

1px = 0.0625rem assuming a 16px base.

Is px affected by zoom?

Yes, it scales with browser zoom but remains fixed in layout.

Is px good for fonts?

Not recommended for fonts due to poor accessibility scaling.

Keyboard Shortcuts

  • Ctrl + C: Convert
  • Ctrl + I: Invert units
  • Esc: Reset values

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