Free tools trusted by 50,000+ users every month
Screen Ruler — Measure Pixels & Dimensions on Your Screen Instantly
Screen Ruler is a powerful measurement tool that floats on top of all your windows, allowing you to measure the width, height, and position of any element on your screen in pixels with pixel-perfect accuracy. Perfect for web designers, developers, UI/UX professionals, and digital creators.
Interactive preview: Drag corners to resize, drag center to move
How to Use the Screen Ruler
Horizontal Measurement
Measure width of elements, windows, and screen areas precisely
Vertical Measurement
Get exact height measurements for spacing and alignment
Position Tracking
See X and Y coordinates of any screen position
Screen Ruler: Essential Tool for Digital Precision
In digital design and development, precise measurements are crucial. Whether you’re creating a website layout, designing an app interface, or editing graphics, the Screen Ruler provides instant, accurate pixel measurements without switching between applications or using complex software. Unlike physical rulers or basic screenshot tools, our floating ruler stays on top of all windows and updates measurements in real-time as you adjust it.
Professional Use Cases
Measure spacing, padding, margins, and element dimensions to maintain design consistency
Verify CSS dimensions, responsive breakpoints, and pixel-perfect implementation
Measure image sizes, canvas dimensions, and alignment for print and digital media
Check mobile UI element sizes, touch targets, and responsive layouts across devices
Key Features & Benefits
- 🔍 Real-time Measurements — Dimensions update instantly as you resize the ruler
- 📱 Floating Overlay — Stays on top of all windows, no alt-tabbing required
- ⚙️ Multiple Units — Switch between pixels, points, inches, and centimeters
- 🎨 Customizable Appearance — Change ruler color, opacity, and text size for better visibility
- ⚡ Keyboard Shortcuts — Toggle ruler visibility, reset position, and copy measurements with hotkeys
- 📤 Copy to Clipboard — One-click copy of measurements for pasting into design tools or code
How It Compares to Built-in Tools
While operating systems offer basic measurement tools (like macOS’s screenshot ruler or Windows’ Snipping Tool), our Screen Ruler provides superior functionality:
| Feature | System Tools | Our Screen Ruler |
|---|---|---|
| Floating Overlay | ❌ Limited | ✅ Always on top |
| Real-time Updates | ❌ Static | ✅ Live measurements |
| Multiple Units | ❌ Pixels only | ✅ 5+ unit options |
| No Installation | ✅ Built-in | ✅ Browser-based |
For advanced design workflows, explore Figma’s best practices for grids and layouts.
More Free Design & Development Tools
Enhance your workflow with these complementary tools:
- Color Picker — extract and match colors from anywhere on screen
- Image to WebP Converter — optimize images for web performance
- Unit Converter — convert between pixels, points, inches, and more
- QR Code Generator — create QR codes for design sharing
Frequently Asked Questions
Q: Does the Screen Ruler work on multiple monitors?
A: Yes! Our Screen Ruler works across all connected displays. Simply move the ruler to any screen by dragging it to the edge of your current display.
Q: Can I measure diagonal distances?
A: Absolutely. While the primary ruler measures horizontal and vertical dimensions, you can switch to diagonal mode by holding the Shift key while dragging, or use the angle measurement feature to calculate diagonal distances.
Q: Is this tool secure? Does it capture my screen content?
A: 100% secure and private. Our Screen Ruler runs entirely in your browser and never captures, stores, or transmits your screen content. It only measures pixel dimensions and positions — no screenshots or data collection.
Q: Can I use this on mobile devices like tablets?
A: Yes! The tool is fully responsive and works on tablets with touch gestures. Simply tap and drag to position and resize the ruler on your tablet screen.
