Screen Ruler (Pixel)
Use this free browser-based screen ruler to measure distances in pixels directly on your screen. Simply drag to measure width, height, or diagonal distance between two points. Perfect for designers, developers, and UI testing — no installation required, fully browser-based and private.
Ruler Controls
Measurement Output
All Measurement Tools
Convert between units of length (m, ft, in, cm).
Convert area units (sq m, sq ft, acres).
Convert units of volume (litres, gallons, cubic m).
Convert between kg, lb, g, oz.
Convert speed units (km/h, mph, m/s).
Convert between °C, °F, K.
Convert hours, minutes, seconds, days.
Convert power units (W, kW, hp).
Convert bytes, KB, MB, GB, TB.
Convert mpg, L/100km, etc.
Convert Pa, bar, psi.
Convert J, kJ, kcal, kWh.
Convert Hz, kHz, MHz, GHz.
Convert degrees, radians, grads.
Convert bits/s, kB/s, MB/s.
Convert N, kN, lbf.
Convert Nm, lbf·ft.
Convert lux, foot-candle.
Convert dB, dBA, SPL.
Convert bytes/s, MB/s, GB/s.
Convert between density units (kg/m³, g/cm³).
Convert flow units (L/min, m³/s, gpm).
Convert acceleration (m/s², g, ft/s²).
Convert Sievert, Gray, and Roentgen units.
Convert candela per m², nit, foot-lambert.
Convert Tesla, Gauss, and Oersted units.
Convert centipoise, Pa·s, stokes.
Convert Ampere, milliampere, kiloampere.
Convert Coulomb, mC, μC, Ah.
Convert Volts, millivolts, kilovolts.
Convert Ohm, kΩ, MΩ.
Convert Farad, microfarad, picofarad.
Convert Henry, mH, μH.
Measure oscillation frequency in real time.
Measure elapsed time accurately.
Set countdowns and track remaining time.
Measure beats per minute visually and audibly.
Show direction using device orientation.
Measure objects directly on your screen.
Measure angles on screen precisely.
Measure distances between two points on screen.
Measure pixel distances on your display.
Find the exact DPI/PPI of your device screen.
Measure and detect colors from any image or screen.
Analyze screen or image brightness levels.
Measure contrast ratio between two colors.
Measure the tilt or rotation of your device screen.
Measure distance between two points on a map.
Find your monitor’s size and resolution in inches.
Measure display refresh rate (Hz) using JavaScript.