Free Online Pixel Ruler — Measure Distances in Pixels on Any Image
Measure distances in pixels on any image with our free online pixel ruler. Simply upload an image and click two points — the tool draws a measurement line and displays the exact pixel distance. Perfect for designers checking element spacing, developers verifying UI measurements, or anyone needing quick on-screen pixel measurements. All processing happens locally in your browser.
Upload an image to measure.
Click a starting point, then click an ending point on the image.
View the pixel distance, horizontal and vertical deltas.
Tips for Using the Pixel Ruler
- Use the pixel ruler to measure spacing between UI elements, button sizes, or margins in design mockups.
- The tool shows both the straight-line distance and the horizontal/vertical components separately.
- Click 'Clear Measurement' to remove the current measurement and start a new one.
Frequently Asked Questions — Pixel Ruler
Is the pixel ruler free?
Yes, completely free. No registration, no hidden charges, and no file size limits. All processing happens locally in your browser.
How does pixel measurement work?
The tool records the coordinates of two clicks on the image and calculates the Euclidean distance between them in pixels.
What measurements are shown?
The straight-line distance, horizontal difference (Δx), and vertical difference (Δy) between the two clicked points.
Can I measure multiple distances?
One measurement at a time. Click 'Clear Measurement' to remove the current line and measure a new distance.
What image formats are supported?
All common image formats are supported: JPEG, PNG, WebP, GIF, BMP, TIFF, and more.
Are the measurements accurate?
Measurements are based on actual pixel coordinates. Accuracy depends on image resolution and click precision.
Can I zoom in for more precise placement?
The image is displayed at its original pixel dimensions mapped to the screen.