Measuring tools
Measuring tools in the browser: hold an on-screen ruler or protractor against an object, level a shelf with a bubble level, measure an angle, noise level or brightness, and read your speed from GPS.
Sound Level Meter
Measure noise levels in decibels using your device microphone. Free, private.
GPS Speedometer
See your real speed from GPS: max, average, distance and track export. Check what your dashboard reads against true speed. No install.
Bubble Level
Digital spirit level using your phone's sensors — 2D surface bubble, inclinometer, plumb line and camera AR with angle export.
Online Protractor
Online protractor with transparent overlay and photo measurement — mm calibration, multi-angle, PNG/PDF/JSON export. Handy for builders, carpenters and students.
Online Ruler
Free online ruler in actual size. Calibrate to your screen and measure in cm, mm and inches — on screen or on a photo.
Angle Finder
A digital inclinometer that reads tilt in degrees, percent, per-mille and roof pitch — plus a clinometer mode for the height of trees and buildings.
Light Detector
Press Start Camera to activate your camera. The tool will convert light levels into audio tones.
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