Measurement & Calibration Tool
Calibrated On-Screen Ruler
Measure physical objects against your monitor with millimetric precision. Calibrate using any standard credit card or driver's license for 1:1 real-world scaling.
PPI: 96
Draggable Caliper Markers (Drag line to measure)Distance: 10.0 cm (100 mm)
Aโฒ
Bโฒ
Standard Card85.6 mm
Calibration Guide:
Place any credit card, debit card, or ID against your screen. Adjust the PPI slider until the distance between marker A and marker B matches the exact width of your card (85.6 mm).