Measure anything in inches directly on your screen. Our online inch ruler provides 1/16" precision with clearly marked subdivisions — just like a physical ruler. Free, no download needed.
Open Inch Ruler →Our inch ruler displays 5 levels of tick marks: 1/16" (smallest), 1/8", 1/4", 1/2", and full inch (largest, numbered). This hierarchical system matches professional physical rulers and makes reading fractions intuitive. The taller the tick mark, the larger the fraction it represents.
Large numbered ticks represent whole inches (1, 2, 3...). The medium tick between two inch marks is the 1/2" mark. Between the inch and 1/2" marks are 1/4" ticks. Between each 1/4" are 1/8" ticks, and the smallest ticks represent 1/16" — roughly 1.6mm each.