Convert Area from Square Decimeters to Ares (dm2 to a)

Select a category and enter your values below

Single conversion

Square Decimeter to Are Conversion Formula

To convert from Square Decimeter (dm2) to Are (a), use the following formula:

Are (a)

= 1100 × 1100× Square Decimeter (dm2)

= 1104× Square Decimeter (dm2)

= 10-4× Square Decimeter (dm2)


Example

Let's convert 5 Square Decimeter (dm2) to Are (a).

Using the formula:

5 × 10-4 = 0.0005

Therefore, 5 Square Decimeter (dm2) is equal to 0.0005 Are (a).

How many square decimeters are in one are? One Are (a) contains 104 Square Decimeters (dm2) — the inverse of the factor above. Multiplying by 10-4 takes you from square decimeters to ares; multiplying by 104 brings you back.

Put in words: one square decimeter equals 10-4 ares, so the square decimeter is the smaller unit of this pair. Converting between them never changes the amount of area being measured — only the size of the unit you count it in.

What is a Square Decimeter (dm2)?

A square decimeter (dm2) is a unit of area in the metric system.

It is equal to one-hundredth of a square meter (0.01 m2). The plural form is square decimeters.


How Big is a Square Decimeter? Everyday Examples

The square decimeter is a practical unit for measuring things that are too big for square centimeters but too small for square meters. Think of it as a handy bridge between the two.

For example, the surface area of a small floor tile, a piece of A4 paper, or the screen of a tablet can be conveniently measured in square decimeters.

It's also frequently used in crafts like leatherwork and woodworking for measuring smaller pieces of material.


The square decimeter is also directly connected to volume—specifically, the liter.

Imagine a cube with a base of exactly one square decimeter (1 dm2) and a height of one decimeter (1 dm). The volume of this cube is one cubic decimeter (1 dm3), which is the exact definition of one liter.

This makes the square decimeter a helpful unit of measurement for visualizing the capacity of everyday items, such as a carton of milk or a water bottle.


Square Decimeter Conversions (dm2 to m2 and cm2)

Converting the square decimeter to other metric units is very straightforward.

Here are the most common conversions:

  • 1 square meter (m2) = 100 square decimeters (dm2)
  • 1 square decimeter (dm2) = 100 square centimeters (cm2)

What is an Are (a)?

An are (a) is a metric unit of area, defined as 100 square meters (100 m2).

It is part of the same system as the more widely known hectare. The plural form is ares.


From Are to Hectare: A Common Land Measurement

The hectare (ha), a much more common unit for measuring land, is derived directly from the are.

The prefix 'hecto-' means 100, so one hectare is equal to 100 ares.

Since one are is 100 square meters, a hectare is equivalent to 10,000 square meters (100 ares × 100 m2/are). This makes the hectare an ideal unit for measuring large areas, such as farms, forests, and parks.


The History and Modern Use of the Are

The are was first established as part of the original French metric system in 1795. It was designed to serve as a standard base unit for measuring land, simplifying calculations required by older, traditional units.

While the hectare is more common today in agriculture and forestry, the are is still used in specific contexts, such as real estate and land registries in many countries, particularly throughout Europe.


The are serves as the foundation for other metric units of land area, making conversions straightforward. The most common related units include:

  • Centiare (ca): Equal to one-hundredth of an are. This makes a centiare precisely one square meter (1 m2).
  • Decare (daa): Equal to ten ares, or 1,000 square meters (1,000 m2). The decare is often used for land measurement in parts of Eastern Europe and the Middle East.
  • Hectare (ha): Equal to one hundred ares, or 10,000 square meters (10,000 m2).

Square Decimeter to Are Conversion Table

Here are some quick reference conversions from Square Decimeter (dm2) to Are (a):

Square DecimetersAres
0.000001 dm210-10 a
0.001 dm210-7 a
0.1 dm210-5 a
1 dm210-4 a
2 dm20.0002 a
3 dm20.0003 a
4 dm20.0004 a
5 dm20.0005 a
6 dm20.0006 a
7 dm20.0007 a
8 dm20.0008 a
9 dm20.0009 a
10 dm20.001 a
20 dm20.002 a
30 dm20.003 a
40 dm20.004 a
50 dm20.005 a
100 dm20.01 a
1000 dm20.1 a
10000 dm21 a

List some Area Converters

For all Area converters, choose units using the From/To dropdowns above.