Pixel Ruler | Free Online Image Measurement Tool

Drag the ruler anywhere on your screen. Upload an image to measure dimensions on it, or click "Measure" to measure anywhere on the page.

Upload Image (Optional, PNG, JPEG, WebP, GIF, max 15 MB)

Ruler Orientation

Ruler Length: 800px

Ruler Height: 50px

Unit

Measurements

Width- px

Height- px

Distance- px

Angle-°

Usage Tips

Upload an image and open the measurement dialog to measure on it
Drag the ruler anywhere on your screen when no image is loaded
In the dialog, measuring starts automatically — just drag from start to end on the canvas
Use "Reset" to clear the current measurement and start over
Press Escape to cancel measuring mode
Zoom your browser (Ctrl+ or Cmd+) for finer precision

Measurements are in CSS pixels and may vary based on your display settings

How to use

Upload an image or paste an image URL to load it into the ruler. Use the overlay to measure width, height, distance between two points, and angles. Switch units (px, in, cm) and copy measurements to the clipboard. Ideal for web design, UI mockups, and checking image dimensions.

Related Tools

JPG to PDF Converter

Convert JPG images to PDF documents

Image Compressor

Compress images with Sharp for smaller file sizes

Image Converter

Convert images between different formats

Enjoying this tool?

Share it with friends and colleagues—it helps others discover free tools they need.