metric units (used worldwide) and imperial units (primarily used in the us) measure length differently. here are common conversions between the two systems:
公制单位
imperial equivalent
英制单位
metric equivalent
1 millimeter
0.03937 inches
1英寸
25.4 millimeters
1 centimeter
0.3937 inches
1 英尺
30.48 centimeters
1米
39.37英寸
1 码
0.9144 meters
1米
3.2808 feet
1 英里
1.6093 kilometers
1 kilometer
0.6214 miles
1 英里
1609.3 meters
most countries use the metric system, which is decimal-based and easier for conversions. the united states is the primary country still using imperial units for everyday measurements.