How long is 6 inches?

A half-foot ruler is 6 inches long. It is the shorter of the two school sizes, the other being the 12 inch ruler, and works on small drawings and craft cutting.

A 6 inch submarine is the current fast-food size, and the footlong 12 inch is the older standard. Chains moved to 6 inch sandwiches in the 2010s.

A US license plate is 6 inches high in all 50 states, and 12 inches wide. The US standard was set in the 1950s and has not changed.

A 4 by 6 inch photo is 6 inches on its long edge. That size has been the standard print format since the 1950s and is the default for inkjet prints.

A standard hot dog frank is 6 inches long, and a footlong is 12. The 6 inch is what most stands still serve today.

E-readers are measured on the diagonal like every screen, so a 6 inch e-reader is 6 inches corner to corner. That is a small screen, closer to a large phone.

A school protractor is 6 inches across the arc. The 4 inch version fits a pencil case and is enough for most geometry work.

Barber shears are commonly 5.5 or 6 inches, against 4.5 to 5.5 for hair cutting shears. The extra length suits bulk cutting and scissor-over-comb work.

A standard needle-nose plier is 6 inches long. That is the most common length for reaching into a panel and pulling wire through a tight box.

A seam gauge is 6 inches long, matching the 6 inch default seam allowance. It is usually metal with a sliding stop for pressing hems and setting side seams.