the IT Hustle
ToolsField ManualAbout

Pixel Ruler

Measure pixel distances on your screen. Drag to create rulers that show width and height. Perfect for checking spacing, alignment, and dimensions in web designs.

50
50
100
100
150
150
200
200
250
250
300
300
350
350
400
400

Click and drag to measure. Click a measurement to remove it. Use grid snap for precise measurements.

How to Measure Distances in Pixels

Drag to measure widths, heights, and diagonals with The IT Hustle's free Pixel Ruler.

  1. 1
    Set up the canvasChoose a working area between 200 and 800 pixels and toggle the grid overlay on if you want visual guides.
  2. 2
    Pick a snap incrementSet grid snapping to 1, 2, 4, 5, 8, 10, or 16 pixels so measurements land on your design system's spacing scale.
  3. 3
    Drag to measureClick and drag across the canvas — the live overlay shows width, height, and diagonal distance as you go.
  4. 4
    Keep multiple measurementsEach completed drag is saved to a list below the canvas with its coordinates and dimensions; click one to remove it.
  5. 5
    Clear and start overHit Clear to wipe all measurements at once.

Frequently Asked Questions

Snapping rounds your measurements to a fixed increment, like 4px or 8px. Since most design systems use a 4- or 8-point spacing scale, snapping tells you instantly whether a gap conforms to the scale.

No — it measures within its own canvas area on the page. For measuring arbitrary regions of your screen, you'd need a desktop ruler app; this tool is built for quick spacing checks and drag-measurement practice inside the browser.

The diagonal is the straight-line distance between your drag's start and end points, computed with the Pythagorean theorem. It's handy when checking angled elements or estimating how far apart two points really are.

Exact to the CSS pixel, subject to your snap setting — set snapping to 1px for maximum precision or a larger increment for design-scale checking.

Related Tools

Aspect Ratio CalculatorResponsive PreviewSpacing Calculator