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Length - US Customary

Imperial length units are traditional measurements primarily used in the United States and the United Kingdom, including miles, yards, feet, and inches.

1 inch (in) = The smallest unit commonly used.
1 foot (ft) = 12 inch (in)
1 yard (yd) = 3 feet or 36 inches
1 Mile (mi) = 5,280 feet or 1,760 yards.

Imperial → Metric

1 Inch (in) = 25.4 Millimeter (mm)
1 Foot (ft) = 30.48 Centimeter (cm) = 0.3048 Meter (m)
1 Yard (yd) ≈ 0.9144 Meter (m)
1 Mile (mi) ≈ Meter (m)
1 Mile (mi) ≈ 1.609 Kilometer (km)

Length Units Conversion

Inches Ruler

Millimeters Ruler

Which is bigger?

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Length - Metric Units

Metric length units are standardized units of distance in the metric system, with the meter (m) as the base unit, and multiples or fractions defined using decimal prefixes.

1 Meter (m) = 10 decimeter (dm)
1 Meter (m) = 100 Centimeter (cm)
1 Meter (m) = 1000 Millimeter (mm)
1 Kilometer (km) = 1000 Meter (m)

Metric → Imperial

10 Millimeter (mm) = 1 cm ≈ 0.39 Inch (in)
100 Centimeter (cm) = 1 m = 3.28 Feet (ft)
1 Meter (m) = 3.28 Feet (ft)
1 Meter (m) ≈ 1.0936 Yard (yd)
1 Kilometer (km) ≈ 0.62 Mile (mi)

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