Phone Sensors

Spirit level, sound meter, compass, GPS speedometer and more – uses your smartphone’s sensors right in the browser.

CompassFree online compass for your phone: heading in degrees and cardinal direction, bearing to follow and declination for true north – right in the browser.GPS SpeedometerFree GPS speedometer in the browser: speed in km/h, mph or knots, max and average speed, distance, altitude and coordinates – no app needed.Height MeterMeasure the height of trees, buildings or poles with your phone: sight the top and base, get the height by trigonometry – free, in the browser.Sensor CheckTest your phone’s sensors in the browser: which sensor APIs are supported, live gyroscope, accelerometer and orientation values, event rate and vibration.Sound Level MeterFree online sound level meter: measure noise in dB(A) with your phone or laptop microphone – min, max, Leq and a live chart, right in the browser.Spectrum AnalyzerFree real-time audio spectrum analyzer: see the frequencies your microphone picks up, find the loudest tone with its note – right in the browser.Spirit LevelFree online spirit level and inclinometer for your phone: bubble level lying flat, horizon on an edge, angle in degrees and percent – no app needed.Vibration MeterFree vibration meter and seismograph for your phone: measure vibrations in m/s², peak and dominant frequency with the accelerometer – in the browser.