Ruler & Measure - Screen Ruler
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About this app
Turn your Android phone into a handy ruler.
Ruler & Measure uses your screen to display a real-size ruler for quick length measurements. Whether you need centimeters, millimeters, or inches — just place an object on your screen and read the scale.
SCREEN RULER
• Real-size ruler displayed on your phone screen
• Horizontal and vertical scales for flexible measurement
• Switch between cm, mm, and inch units with one tap
TWO-POINT MEASUREMENT
• Tap two points on the screen to measure the distance between them
• Results shown in all three units at once (cm, mm, inch)
• Copy results to clipboard for easy sharing
DPI CALIBRATION
• Automatic screen DPI detection for accurate scaling
• Manual calibration slider to fine-tune measurements on your device
• Adjust between 80% and 120% for the best accuracy
CUSTOMIZATION
• Choose ruler color (dark, light, blue, green) to match any background
• Light and dark theme that follows your system
• Available in many languages
GOOD TO KNOW
• This is an approximate measurement tool for everyday use
• Accuracy depends on your device's screen DPI
• Works best for small objects that fit on your screen
• No internet required for measurements
Ruler & Measure uses your screen to display a real-size ruler for quick length measurements. Whether you need centimeters, millimeters, or inches — just place an object on your screen and read the scale.
SCREEN RULER
• Real-size ruler displayed on your phone screen
• Horizontal and vertical scales for flexible measurement
• Switch between cm, mm, and inch units with one tap
TWO-POINT MEASUREMENT
• Tap two points on the screen to measure the distance between them
• Results shown in all three units at once (cm, mm, inch)
• Copy results to clipboard for easy sharing
DPI CALIBRATION
• Automatic screen DPI detection for accurate scaling
• Manual calibration slider to fine-tune measurements on your device
• Adjust between 80% and 120% for the best accuracy
CUSTOMIZATION
• Choose ruler color (dark, light, blue, green) to match any background
• Light and dark theme that follows your system
• Available in many languages
GOOD TO KNOW
• This is an approximate measurement tool for everyday use
• Accuracy depends on your device's screen DPI
• Works best for small objects that fit on your screen
• No internet required for measurements
Measure length with your phone screen. CM, MM & Inch ruler with DPI calibration.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- This app may share these data types with third partiesDevice or other IDs
- No data collectedLearn more about how developers declare collection
- Data isn’t encrypted
