What does 138 inches look like?

138-Inch Distance Comparisons

• Picture the height of an NHL hockey goal: 138 inches is about 2.9 times its measured length.

  An NHL goal frame rises 4 feet, or 48 inches, from the ice to the crossbar. Using its published size of 48 inches, dividing 138 by that reference gives 2.9 of those measurements.

  Source: National Hockey League

• Picture the diameter of a U.S. quarter: 138 inches is about 145 times its measured length.

  The United States Mint specifies a quarter-dollar diameter of 0.955 inches, just under one full inch from edge to edge. Using its published size of 0.96 inches, dividing 138 by that reference gives 145 of those measurements.

  Source: United States Mint

• 138 inches is about 39.9 times the width of a standard passport booklet.

  The international machine-readable passport format is 88 millimetres wide, equal to approximately 3.46 inches. Its published measurement is 3.46 inches; the comparison comes from placing that figure against 138 inches.

  Source: International Civil Aviation Organization

• A 138-inch distance works out to about 11.5 times the width of a standard U.S. license plate.

  Standard full-size North American passenger-vehicle license plates measure 12 inches across from side to side. At 12 inches, this familiar reference provides a direct scale comparison: the target distance covers 11.5 of those measurements.

  Source: American Association of Motor Vehicle Administrators

• 138 inches is about 1.8 times the length of a standard twin mattress.

  A standard U.S. twin mattress is approximately 75 inches long, while the twin XL format adds another five inches. The source measurement converts to 75 inches, so the proportional comparison with 138 inches is 1.8 of those measurements.

  Source: Sleep Foundation

• For scale, 138 inches spans about 7.7 times the width of a Major League Baseball base.

  The bases used in Major League Baseball are 18-inch squares, a size introduced to provide players with more room around each bag. Its published measurement is 18 inches; the comparison comes from placing that figure against 138 inches.

  Source: Major League Baseball

• For scale, 138 inches spans about 12.4 times the length of an NFL football.

  NFL specifications place the long axis of the football between 11 and 11.25 inches in length. Its published measurement is 11.13 inches; the comparison comes from placing that figure against 138 inches.

  Source: National Football League

• 138 inches is approximately 350.5 centimeters.

  Using the exact conversion that 1 inch equals exactly 2.54 centimeters, the unrounded result is 350.52 centimeters.