Convert Decare to Square Kilometre
1 decare = 0.001 square kilometre (km²). For example, 10 decare = 0.01 square kilometre and 100 decare = 0.1 square kilometre. Type any value below to convert decare to square kilometre both ways — it runs entirely in your browser.
Quick answer: Decare to Square Kilometre
1 Decare = 0.001 Square Kilometre (daa → km²). To convert decare to square kilometre, multiply by 0.001. To convert square kilometre to decare, multiply by 1,000. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common decare-to-square kilometre questions.
How to convert Decare to Square Kilometre
To convert decare to square kilometre, multiply the number of decare by the conversion factor 0.001, because 1 daa = 0.001 km². The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 km² = 1,000 daa, so you divide by 0.001 (or multiply by 1,000) to turn square kilometre back into decare.
km² = daa × 0.001 ·
daa = km² × 1,000
- Write down the value you want to convert, in decare.
- Multiply it by 0.001.
- The result is the same area/length/quantity expressed in square kilometre.
Decare to Square Kilometre — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 decare is 0.005 square kilometre because 5 daa × 0.001 = 0.005 km².
| Decare | Calculation | Square Kilometre |
|---|---|---|
| 1 daa | 1 daa × 0.001 = 0.001 km² | 0.001 km² |
| 2 daa | 2 daa × 0.001 = 0.002 km² | 0.002 km² |
| 3 daa | 3 daa × 0.001 = 0.003 km² | 0.003 km² |
| 5 daa | 5 daa × 0.001 = 0.005 km² | 0.005 km² |
| 7 daa | 7 daa × 0.001 = 0.007 km² | 0.007 km² |
| 10 daa | 10 daa × 0.001 = 0.01 km² | 0.01 km² |
| 12 daa | 12 daa × 0.001 = 0.012 km² | 0.012 km² |
| 15 daa | 15 daa × 0.001 = 0.015 km² | 0.015 km² |
| 20 daa | 20 daa × 0.001 = 0.02 km² | 0.02 km² |
| 25 daa | 25 daa × 0.001 = 0.025 km² | 0.025 km² |
| 50 daa | 50 daa × 0.001 = 0.05 km² | 0.05 km² |
| 100 daa | 100 daa × 0.001 = 0.1 km² | 0.1 km² |
Common Decare to Square Kilometre conversions
These are the decare-to-square kilometre values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 decare = 0.001 square kilometre
- 2 decare = 0.002 square kilometre
- 2.5 decare = 0.0025 square kilometre
- 3 decare = 0.003 square kilometre
- 4 decare = 0.004 square kilometre
- 5 decare = 0.005 square kilometre
- 6 decare = 0.006 square kilometre
- 7 decare = 0.007 square kilometre
- 8 decare = 0.008 square kilometre
- 9 decare = 0.009 square kilometre
- 10 decare = 0.01 square kilometre
- 12 decare = 0.012 square kilometre
- 15 decare = 0.015 square kilometre
- 20 decare = 0.02 square kilometre
- 25 decare = 0.025 square kilometre
- 30 decare = 0.03 square kilometre
- 50 decare = 0.05 square kilometre
- 75 decare = 0.075 square kilometre
- 100 decare = 0.1 square kilometre
- 200 decare = 0.2 square kilometre
- 500 decare = 0.5 square kilometre
- 1000 decare = 1 square kilometre
Decare to Square Kilometre conversion chart (both directions)
The chart below converts decare to square kilometre and square kilometre to decare side by side, so it works whichever way you need. 1 decare = 0.001 square kilometre, and 1 square kilometre = 1,000 decare.
| Decare → Square Kilometre | Square Kilometre → Decare |
|---|---|
| 0.25 daa = 0.00025 km² | 0.25 km² = 250 daa |
| 0.5 daa = 0.0005 km² | 0.5 km² = 500 daa |
| 1 daa = 0.001 km² | 1 km² = 1,000 daa |
| 2 daa = 0.002 km² | 2 km² = 2,000 daa |
| 3 daa = 0.003 km² | 3 km² = 3,000 daa |
| 4 daa = 0.004 km² | 4 km² = 4,000 daa |
| 5 daa = 0.005 km² | 5 km² = 5,000 daa |
| 6 daa = 0.006 km² | 6 km² = 6,000 daa |
| 7 daa = 0.007 km² | 7 km² = 7,000 daa |
| 8 daa = 0.008 km² | 8 km² = 8,000 daa |
| 9 daa = 0.009 km² | 9 km² = 9,000 daa |
| 10 daa = 0.01 km² | 10 km² = 10,000 daa |
| 12 daa = 0.012 km² | 12 km² = 12,000 daa |
| 15 daa = 0.015 km² | 15 km² = 15,000 daa |
| 20 daa = 0.02 km² | 20 km² = 20,000 daa |
| 25 daa = 0.025 km² | 25 km² = 25,000 daa |
| 30 daa = 0.03 km² | 30 km² = 30,000 daa |
| 40 daa = 0.04 km² | 40 km² = 40,000 daa |
| 50 daa = 0.05 km² | 50 km² = 50,000 daa |
| 75 daa = 0.075 km² | 75 km² = 75,000 daa |
| 100 daa = 0.1 km² | 100 km² = 100,000 daa |
| 150 daa = 0.15 km² | 150 km² = 150,000 daa |
| 200 daa = 0.2 km² | 200 km² = 200,000 daa |
| 250 daa = 0.25 km² | 250 km² = 250,000 daa |
| 500 daa = 0.5 km² | 500 km² = 500,000 daa |
| 1000 daa = 1 km² | 1000 km² = 1,000,000 daa |
Decare vs Square Kilometre: which is bigger?
A square kilometre is the larger unit: one square kilometre equals 1,000 decares. Put another way, you need 1,000 decares to make a single square kilometre.
What is a Decare? History, origin and usage
The decare is a metric land unit of 1,000 square metres, equal to 10 ares or one-tenth of a hectare. It corresponds to the modern metric dunam, whose name comes from the Ottoman Turkish donum (from donmek, 'to turn'), originally the area a team of oxen could plough in a day.
The decare and its dunam equivalent are used in Norway, Turkey and parts of the Balkans, while the metric dunam of 1,000 square metres adopted in 1928 is standard in Israel and Palestine. It is a convenient mid-size unit between the are and the hectare.
One decare equals one metric dunam, exactly 1,000 square metres, and ten decares make one hectare. The Ottoman dunam was a regional cousin of the English acre and the Greek stremma, all rooted in a day's ploughing.
What is a Square Kilometre? History, origin and usage
The square kilometre is an SI-based unit of area equal to a square one kilometre on each side. It became the natural large-area metric unit once the kilometre was adopted for long distances.
It is used for the areas of cities, districts, countries, lakes and other large regions on maps and in geography and statistics. National and regional land areas are almost universally reported in square kilometres.
One square kilometre equals 100 hectares or 1,000,000 square metres, and is about 0.386 square mile. For scale, the entire Vatican City covers only about half a square kilometre.
Convert 1 Decare to other units
It can help to see a decare next to the other units it is commonly compared with. One decare (daa) is equal to:
| 1 Decare equals | Unit |
|---|---|
| 1,195.99 gaj | Gaj |
| 39.53686 marla | Marla |
| 1.976843 kanal | Kanal |
| 0.2471054 killa | Killa |
| 0.009884215 murabba | Murabba |
| 24.71054 decimal | Decimal |
| 24.71054 cent | Cent |
| 9.884215 guntha | Guntha |
| 0.2471054 ac | Acre |
| 0.1 ha | Hectare |
| 10,763.91 ft² | Square Foot |
| 1,195.99 yd² | Square Yard |
| 1,000 m² | Square Metre |
| 10,000,000 cm² | Square Centimetre |
| 1,000,000,000 mm² | Square Millimetre |
| 1,550,003 in² | Square Inch |
| 0.001 km² | Square Kilometre |
| 10 are | Are |
| 0.0003861022 mi² | Square Mile |
| 0.2471054 ac | Acre |
| 1,195.99 yd² | Square Yard |
| 10,763.91 ft² | Square Foot |
| 0.1 ha | Hectare |
| 355.8317 karam² | Square Karam |
| 4.484963 ground | Ground |
| 74.74938 lessa | Lessa |
| 239.198 chatak | Chatak |
| 0.1868734 pura | Pura |
Convert 1 Square Kilometre to other units
One square kilometre (km²) is equal to:
| 1 Square Kilometre equals | Unit |
|---|---|
| 1,195,990 gaj | Gaj |
| 39,536.86 marla | Marla |
| 1,976.843 kanal | Kanal |
| 247.1054 killa | Killa |
| 9.884215 murabba | Murabba |
| 24,710.54 decimal | Decimal |
| 24,710.54 cent | Cent |
| 9,884.215 guntha | Guntha |
| 247.1054 ac | Acre |
| 100 ha | Hectare |
| 10,763,910 ft² | Square Foot |
| 1,195,990 yd² | Square Yard |
| 1,000,000 m² | Square Metre |
| 10,000,000,000 cm² | Square Centimetre |
| 1,000,000,000,000 mm² | Square Millimetre |
| 1,550,003,000 in² | Square Inch |
| 10,000 are | Are |
| 1,000 daa | Decare |
| 0.3861022 mi² | Square Mile |
| 247.1054 ac | Acre |
| 1,195,990 yd² | Square Yard |
| 10,763,910 ft² | Square Foot |
| 100 ha | Hectare |
| 355,831.7 karam² | Square Karam |
| 4,484.963 ground | Ground |
| 74,749.38 lessa | Lessa |
| 239,198 chatak | Chatak |
| 186.8734 pura | Pura |
Tips for converting Decare to Square Kilometre
- To go from decare to square kilometre, multiply by 0.001; to go back, divide by 0.001 (or multiply by 1,000).
- For a quick mental estimate, remember that 1 decare ≈ 0.001 square kilometre, so 10 decare ≈ 0.01 square kilometre.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Decare to Square Kilometre converter
Type a number into the Decare field and the equivalent in Square Kilometre appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Square Kilometre field to convert the other way (square kilometre to decare). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 daa = 0.001 km²), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for decare-to-square kilometre conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
Indian land units can vary by state and local custom. This converter uses the most widely accepted standard value; always confirm against your local revenue records (patwari / tehsil) for legal transactions.
Frequently asked questions
- How many square kilometre are in 1 decare?
- 1 decare = 0.001 square kilometre (km²). To convert any number of decare to square kilometre, multiply by 0.001.
- How do I convert decare to square kilometre?
- Multiply the number of decare by 0.001. For example, 10 decare = 10 × 0.001 = 0.01 square kilometre, and 25 decare = 0.025 square kilometre.
- How many decare are in 1 square kilometre?
- 1 square kilometre = 1,000 decare. So to convert square kilometre back to decare, multiply by 1,000.
- What is the formula to convert decare to square kilometre?
- square kilometre = decare × 0.001. The reverse formula is decare = square kilometre × 1,000.
- How much is 100 decare in square kilometre?
- 100 decare = 0.1 square kilometre. (And 1000 decare = 1 square kilometre.)
- Which is bigger, a decare or a square kilometre?
- A square kilometre is larger: 1 square kilometre = 1,000 decare.
- Is this decare to square kilometre converter accurate?
- Yes — every value is computed from the exact 0.001 km² per daa factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert square kilometre to decare too?
- Yes. The converter works both ways — enter a value in either field. 1 square kilometre = 1,000 decare.