Decare to Hectare Converter

Area Converter

20 units available

Decimals:

From

To

0.1

1 daa = 0.1 ha

Formula:

ha = daa × 0.1

With your value: 1 daa = 0.1 ha

How big is that?

Everyday references on a logarithmic scale, all expressed in decare so you can sanity-check the result.

Parking space (1/80 your value)0.0125 daa

Tennis court (1/3.8 your value)0.261 daa

Your value1.00 daa

Football pitch (7.1× your value)7.14 daa

Hectare (10× your value)10.0 daa

Central Park (3.4e+3× your value)3.41e+3 daa

Other Decare to Hectare conversions

2 daa to ha 3 daa to ha 4 daa to ha 5 daa to ha 6 daa to ha 7 daa to ha 8 daa to ha

Decare to Hectare Conversion Table

Decare (daa)	Hectare (ha)
0.5	0.05
1	0.1
2	0.2
5	0.5
10	1
15	1.5
20	2
25	2.5
50	5
100	10
250	25
500	50
1000	100

Hectare to Decare Conversion Table

Hectare (ha)	Decare (daa)
0.5	5
1	10
2	20
5	50
10	100
15	150
20	200
25	250
50	500
100	1,000
250	2,500
500	5,000
1000	10,000

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Decare (daa)

Area

Exact conversion

Derived from the square metre via the length definitions above.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Hectare (ha)

Area

Exact conversion

Derived from the square metre via the length definitions above.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Decare to Hectare

To convert from Decare (daa) to Hectare (ha), multiply the value by 0.1.

Formula: ha = daa × 0.1

Reverse: daa = ha × 10

Step-by-Step Example

Start with your value in Decare. For example: 5 daa
Multiply by the conversion factor: 5 x 0.1
The result is: 0.5 ha

About Decare

The decare (daa) is a unit of area. One decare equals 1000 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: area calculations, engineering and science, education.

About Hectare

The hectare equals 10,000 square meters or about 2.471 acres. It is the primary unit for land measurement in most countries.

Common uses: agriculture, forestry, land planning.

Frequently Asked Questions

How many Hectare are in 1 Decare?

There are exactly 0.1 Hectare in 1 Decare. This means the conversion factor from Decare to Hectare is 0.1.

What is the formula to convert Decare to Hectare?

The formula to convert Decare to Hectare is: ha = daa × 0.1. For example, to convert 10 Decare to Hectare, you would multiply 10 by 0.1.

What is a Decare?