Standard Unit of Length

Standard Unit of Length Measurement | SI Unit of Length Conversions, Examples

Do you know the standard unit of length? Here you can get plenty of information on standard units of length. It will explain the definition of length, the standard unit of length, metric system. Check out Solved Examples on Conversion of One Unit of Length to Another Unit of Length. Apply the concept while solving related problems on your own.

Also, Refer:


The distance from starting point to the other end of the object is defined as the length. For example, we measure the cloth using meter tape.

Units of Measuring Length

We know some standard units of length like meters, millimeters, decimeters, centimeters, kilometers. Meter is specified as ‘m’. For example, the meter is used to find the length of the bed, blouse piece, length of the curtain, length of the window, etc.

Meter is divided into 100 equal parts. Each part of the meter is known as a centimeter. It is specified as ‘cm’. Short distances are measured in meters, centimeters, decimeters. For example millimeters and centimeters are used for the height. Decimeter is the unit of measuring the length between centimeter and meter. If we divide 1 meter into 10 equal parts it is called a decimeter.





If we observe the ruler one centimeter is divided into 10 equal parts and they are marked by smaller lines. Each line denotes one millimeter. It can be specified by mm. The millimeter is the unit of length. It is used for calculating a very small length. For example, it is used for calculating the thickness of id card.

So 1 cm=10mm.

Long distances are measured in kilometers. It is specified as ‘km’. For example, a kilometer is used to find the distance between one city to another city.

We can convert one unit to another. i.e. we can convert meters into centimeters, kilometers, etc. For example, we can convert kilometers to meters by multiplying 1000 and meters to kilometers by dividing 1000.

Unit of lengths and their Equivalents are as follows

1 meter=100 centimeter1 meter=1000 millimeters

1 meter=10 decimeter

1 meter=1000 millimeter

1000 meters=1Kilo meters

Metric System

The set of standard units is defined as the metric system.

Conversion of one Unit of Length to Another Unit | Length Conversions

Here there are some examples in which one unit of length is converted to other. With this knowledge, you can solve similar problems very easily.

Example 1:

Convert 9 m  into cm?



For converting meters into centimeters, the number of meters is multiplied by 100. The result is the product cm.



Therefore, 9m is converted to 900cm.

Example 2:

Convert 12m into centimeters



For converting meters into centimeters, the number of meters is multiplied by 100. The result is the product cm.



Therefore, 12m is converted to 1200cm.

Example 3:

Convert the following into centimeters.

19 m


For converting meters into centimeters, the number of meters is multiplied by 100. The result is the product cm.



Therefore, 19m is converted to 1900cm.

Example 4:

Convert 3 km into meters


3 km

As we know that 1 km = 1000 meters so to convert kilometers into meters, the number of km is multiplied by 1000, or place three zeroes after the number of km and write meter in the place of km.

= (3 × 1000) m

= 3000 m

Therefore, 3 km is converted to 3000m.

Example 5:

Convert 17m 2cm into  centimeters


First, convert 17m to centimeters and then add 2 cm.

For converting meters to centimeters multiply the number by 100.



Now add 1700cm to 2cm.



Therefore, 17m2cm is converted to 1702cm.

Example 6:

Convert the following into ‘m’ and ‘cm’.

143 cm


To convert ‘cm’ to ‘m’ and ‘cm’ take two digits from the right are ‘cm’ and the rest have to be written in ‘m’. i.e. First two digits from the right 43 as cm and the rest 1 has to be written in m.

=1m 43cm

Therefore, 143cm is converted to 1m 43cm.

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