Protractor & Angle Finder

Play3rs

Contains adsIn-app purchases

About this app

Protractor & Angle Finder turns your phone into a precise drafting instrument. Measure angles two ways: with an on-screen protractor you align by hand, or with a sensor-based inclinometer that reads the real tilt of any surface.

ON-SCREEN PROTRACTOR
• A graduated 0–180° protractor dial with fine degree ticks
• Two draggable arms — set them to any angle and read the degrees live
• Instant complement angle for quick geometry, carpentry and DIY
• Reset to a clean 90° base with one tap

SENSOR INCLINOMETER (ANGLE FINDER)
• Uses the accelerometer to measure the tilt of a real surface
• Big, easy-to-read degree display plus slope percentage
• Zero-to-surface calibration to measure relative angles and bevels
• Great for shelves, ramps, roofs, furniture, camera setups and levels

BUILT FOR THE JOB
• Clean drafting-board design that stays readable on site
• Works fully offline — no account, no internet required
• Switch instantly between protractor and inclinometer modes
• Optional haptic feedback when you hit common angles

PRO UPGRADE
Unlock Pro to measure angles directly on an imported photo, save and label your measurements, freeze and hold the live reading, and remove ads. It is a one-time upgrade.

Whether you are a student learning geometry, a carpenter checking a miter, a DIYer hanging a shelf, or a photographer leveling a shot, Protractor & Angle Finder gives you an accurate angle in seconds.