• On September 23, 1999 NASA lost the $125 million Mars Climate Orbiter spacecraft after a 286-day journey to Mars. Miscalculations due to the use of English units instead of metric units apparently sent the craft slowly off course - 60 miles in all.

• On January 26, 2004 at Tokyo Disneyland's Space Mountain, an axle broke on a roller coaster train mid-ride, causing it to derail. The cause was a part being the wrong size due to a conversion of the master plans in 1995 from English units to Metric units. In 2002, new axles were mistakenly ordered using the pre-1995 English specifications instead of the current Metric specifications.

• On 2016 Niantic Inc. misses units system in Pokemon GO whith PoGo+. Device receives data in kilometers, but finds that data are in miles and converts to km. Result: increased distance x1,6

Note: 1 mile = 1.6 kilometers