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Last updated date: 17th Apr 2024
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What is a Decimeter?

Decimeter/Decimetre (the unit of measurement in the metric system is equal to one-tenth of a meter (the International System of Base Units of length), 10 centimetres, or 3,937 inches).

The popular non-SI metric volume unit, the litre, is defined as a single cubic decimeter.

The decimeter is the length of the metric scale. The Decimeter Symbol is Dm In Maths. The word "Deci" means one-tenth, and hence 1 decimeter/1 Decimetre(1dm) means one-tenth of a meter. Since the meter is 100 cm, one-tenth of 100 cm is 10 cm. One decimeter measures 10 centimetres. 

Metric System

The metric system is a measuring system that succeeded in the decimalized system built on the meter adopted in France in the 1790s. The historic implementation of these systems resulted in the definition of the International System of Units under the supervision of the International Standards Body. The International System of Units (SI, abbreviated from the French International System (d'unités)) is a modern metric system. It is the only way of calculating official status in nearly every country in the world. It consists of a coherent system of units of measurement beginning with seven basic units, which are the second (the unit of time with the symbol s), meter (length, m), kilogram (mass, kg), ampere (electric current, A), kelvin (thermodynamic temperature, K), mole (substance quantity, mole) and candela (luminous intensity, cd).

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What are the Units of Measurement?

The unit of measurement shall be a certain quantity, specified and accepted by convention by statute, which shall be used as a norm for the measurement of the same quantity. Any other quantity of this kind may be expressed as a multiple of the unit of measurement. A length, for example, is a physical number. A meter is a unit of length that represents a set length. When we say 10 metres (or 10 m), we simply mean 10 times the fixed length of the meter. Measurement is the method of deciding how high or small a physical quantity is relative to the basic reference quantity of the same nature. 

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What are the Units of Length?

Length is a function of distance. In the International System of Quantities, the length is a measure with a dimension of distance. In most measuring schemes, a base unit for length is selected from which all other units are obtained. In the International System of Units (SI) system, the length of the base unit is the meter. In the International System of Units (SI), the fundamental unit of length is the meter (symbol, m) and is now defined in terms of the speed of light (about 300 million meters per second). Millimetre (mm), centimetre (cm), and kilometre (km), derived from the meter, are also widely used measurements. In U.S. customary units, the English or Imperial unit system, the widely used units of length are the inch (in), the foot (ft), the yard (yd), and the mile (mi). The measurement of length used for navigation is the nautical mile (nmi).

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Conversion of Units

The conversion of units is a conversion of various units of measurement for the same number, generally utilizing multiplicative conversion factors. The conversion factor shall be used to adjust the units of the measured quantity without altering its value. The unit bracket conversion method consists of a fraction of which the denominator is equal to the numerator, but it is in separate units. Due to the identity property of the multiplication, the value of the number will not change as long as it is multiplied by one. Meter, Decimeter And Centimeter are units of length. Dm Unit can be expressed using centimetres and metre. Dm Means In Maths decimeter which is a smaller unit of length than a metre.

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Conversion of Decimeter to Other Units

  • 1 decimeter( 1dm) = 100 milimetre

  • 1 decimeter( 1dm) = 10 centimetre

  • 1 decimeter( 1dm) = 0.1 metre

  • 1 decimeter( 1dm) = 0.01 decametre

  • 1 decimeter( 1dm) = 0.001 hectometre

  • 1 decimeter( 1dm) = 0.0001 kilometre

Solved Examples

1. Convert 2550 dm to centimetres.


We know that, 1 decimeter( 1dm) = 10 centimetre, therefore,

2550 decimetre = centimetres

2550 decimetre = 25500 centimetres

2. How many decimetres are 25 metres in length?


We know that, 1 decimeter( 1dm) = 0.1 metre

25 decimetre = 25 x 0.1 metre

25 decimetre = 2.5 metre

FAQs on Decimeter

1. Is the Decimeter Larger than a Centimetre?


A base numbering scheme of 10 is used for Metric units. Therefore, a kilometre is ten times bigger than a millimetre. A decimeter is ten times the size of a centimetre and a meter is ten times the size of a decimeter. Thus, a meter is 100 times larger than a centimetre and a millimetre is 1000 times larger. Going the other direction, one may assume that one meter contains 100 cm. The measurement units generally used are millimetre, centimetre, metre, and kilometre. A decimeter is not as commonly used, but an important unit is an important one. We seldom find dimensions written in decimetres in real life. Since one meter is not a very long length, 0.1 m or 0.5 m is simpler to use when the length is shorter than one meter.

2. What is the Decimeter Used for the Measurement?


For the third power of 10, the SI uses prefixes. The meter is the base unit of length, so we are 'authorized' to measure in metre, millimetres, and micrometres. 1 m = 1000 mm = 2 μ m. The decimeter does not fall into this system, nor does the centimetre because you won't ever see it used in scientific publications. But when we speak about quantities, we find that 1m3 = 1000 dm3 = 1000 2 cm3. For this purpose, cubic decimetre and cubic centimetres are accepted units of volume. Indeed, chemists regularly speak about concentrations of mol dm−3.