Tape Measure Fraction Chart
Every mark on a standard US tape measure — fraction, decimal, and millimeter equivalent.
Half inch
Quarter inches
Eighths
16ths
32nds
| Fraction | Decimal (in) | Millimeters | Mark size |
|---|
How to read a tape measure: The longest mark is the inch. Next longest is the 1/2″. Then 1/4″ and 3/4″, then eighths, sixteenths, and 32nds (shortest marks). Each mark is half the height of the one above it.