Ad Space
Free Pixel Ruler
Measure pixel distances on your screen.
Ad Space
Viewport Width
0
Viewport Height
0
Screen Width
0
Screen Height
0
Device Pixel Ratio
1
How to Use
- Click and drag on the ruler to measure distance. The ruler shows pixel increments.
- The start and end points are draggable—grab them to adjust your measurement.
- Toggle Vertical Mode to measure vertical distances instead of horizontal.
- View your pixel count and estimated physical size below the ruler.
Frequently Asked Questions
How accurate is the physical size calculation?
The physical size is based on your device's pixel ratio and an assumed DPI of 96. Actual monitor DPI varies, so this is an approximation. For precise measurements on printed materials, use a physical ruler.
Can I measure vertical distances?
Yes. Enable Vertical Mode to measure vertical pixel distances instead of horizontal ones.
What does Device Pixel Ratio mean?
High-DPI screens (like Retina displays) have a pixel ratio greater than 1, meaning multiple physical pixels represent one CSS pixel. This tool measures CSS pixels.