Ruler - Screen Measure Tool

No ruler? No problem! Turn your phone screen into a precise measuring tool. Touch, drag, and get real cm/inch measurements instantly.

Turn your smartphone screen into a precise ruler. Measure real lengths with a simple touch and drag.

【Key Features】

• Touch & drag to measure lengths instantly
• Switch between cm and inch units
• Real-time measurement display
• Automatic PPI detection for accurate results

【Precision Calibration】

• Credit card (85.6mm) calibration for pinpoint accuracy
• Saved calibration — set it once, measure anytime
• Optimized accuracy per device

【Easy-to-Use Design】

• Clean ruler interface with clear markings
• Dark mode support
• 10 languages supported
• Intuitive unit toggle

【Perfect For】

• Quick measurements when you don't have a ruler
• DIY, crafts, and sewing projects
• Furniture placement and space planning
• Students and professionals on the go

No need to carry a ruler — measure anything, anywhere with your phone!