Where is 11 3/8" on a ruler?

Quick Answer

11 3/8" inch on a ruler is between the 1/4 mark and the 1/2 mark.

The red marker shows 11 3/8" position on a ruler. This is 11 full inches plus 3 of 8 equal parts of the next inch.

Inches on a Ruler


  Ex.: 1/8, 3/8, 5/8, 3 3/8, 3.8, 6
11 3/8" on a ruler
11 3/8 inches on a ruler
between the 1/4 mark and the 1/2 mark

How to read inches on a ruler

A standard inch ruler divides each inch into equal fractions. The longest lines mark each whole inch; the next-longest is the 1/2 mark (halfway); then come the 1/4 marks, the 1/8 marks, and the shortest lines, the 1/16 marks. Counting the small lines from the last whole inch tells you the fraction.

  • 1/2 inch — the single tall line in the middle of each inch.
  • 1/4 & 3/4 inch — halfway between the inch line and the 1/2 mark.
  • 1/8 marks — 1/8, 3/8, 5/8, 7/8 sit between the 1/4-size lines.
  • 1/16 marks — the shortest lines; most rulers stop here.

For a decimal like 3.8″, find the whole inch (3) then round the rest to the nearest 1/16 — 0.8″ ≈ 13/16, so 3.8″ is at the 3 13/16 mark.

Popular inches on a ruler

Quick access to common ruler marks:

8 3/8 inch8.375 in75 inches75 in4 7/8 inch4.875 in31 inches31 in2 inches2 in13 inches13 in195 inches195 in8 1/4 inch8.25 in71 inches71 in4 3/4 inch4.75 in30 inches30 in1 7/8 inch1.875 in