Pixel Ruler - Measure Screen Distances Online

Measure distances on screen in pixels, centimeters, or inches

Measurement Tool

Unit:DPI:

Click to set start point

Pixel Ruler Online Free - Measure Screen Distances in Pixels, CM, Inches

Free online pixel ruler. Click two points on screen to measure the distance in pixels, centimeters, or inches. Useful for web design, UI/UX, and screen measurements.

Key Features

Click-to-measure distance tool

Supports pixels, centimeters, and inches

Adjustable DPI for accurate physical measurements

Visual line with distance label

100% free, works in browser

Why Use a Pixel Ruler?

Designers and developers often need to measure distances on screen — between elements, for spacing, or to verify dimensions. A pixel ruler lets you do this without any software.

Benefits

•Measure UI element spacing
•Verify design dimensions
•Convert pixels to real-world units
•No software installation needed

How to Measure Screen Distance

1Click once to set the start point
2Move the mouse to see the measurement line
3Click again to set the end point
4See the distance in pixels, cm, and inches

Frequently Asked Questions

How accurate are the cm/inch measurements?

Accuracy depends on your screen's DPI. Set the correct DPI value for your monitor for accurate physical measurements.

How do I find my screen's DPI?

Search 'screen DPI' + your monitor model, or use a DPI calculator with your screen resolution and physical size. Common values: 96 DPI (standard), 144 DPI (1.5x), 192 DPI (2x/Retina).

Can I measure diagonal distances?

Yes. Click any two points on the canvas and the tool calculates the straight-line (Euclidean) distance between them, including diagonals.

Why does the canvas not fill the full screen?

The canvas is fixed at 700×400px for consistent measurements. For full-screen measurement, use a browser extension like Page Ruler Redux.

Can I measure elements on a webpage?

This tool measures distances within its own canvas area. To measure actual webpage elements, use browser DevTools (F12 → Elements → Box Model) or a screen ruler extension.

Related Keywords

pixel ruler onlinescreen rulermeasure pixels onlinepixel measurement toolonline ruler pixels

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