The centimeter equals one hundredth of a meter and is the everyday metric unit for body measurements, clothing sizes and furniture. European clothing tags, height on ID documents and household rulers are all marked in cm. An A4 sheet is 21 ร 29.7 cm.
Real-world: An average adult is 160โ185 cm tall. An A4 sheet is 21 ร 29.7 cm. A standard passport photo is 3.5 ร 4.5 cm.
Read full centimeter reference โThe statute mile equals 1609.344 meters exactly since the 1959 international definition. It is the official road unit in the United States, United Kingdom and Myanmar. The name comes from the Latin "mille passuum" โ one thousand Roman paces. The nautical mile (1852 m) is different and used only in marine and air navigation.
Real-world: London to Edinburgh is about 400 miles by road. A marathon is 26.22 miles. US highways typically post 65โ75 mph speed limits.
Read full mile reference โ