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Length Converter
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Dunam to Acre
Converts dunam to acre with the exact defined factor. One dunam is 0.247105 acre.
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Enter a value to convert.
In short
One dunam is 0.247105 acre, so to convert dunam to acre you multiply by 0.247105, and to go back you multiply acre by 4.04686. 2 dunam is 0.494211 acre, 5 is 1.23553 and 10 is 2.47105. The modern dunam is 1000 m2 exactly — a tenth of a hectare — which makes it the easiest land unit on this page to work with. That figure is the metric dunam, adopted across the region in the twentieth century; the older Ottoman dunam was about 919 m2, so historical documents and modern deeds do not agree. The dunam is used in Turkey, Israel, Palestine, Jordan, Lebanon, Syria, Iraq and the Balkans, where it is written donum, dunam, dunum or dhiraa depending on the country.
How to use the Dunam to Acre
- Type the value you want to convert.
- Pick the unit you are converting from and the unit you want.
- The converted value and the exact conversion factor are shown instantly.
About the Dunam to Acre
The modern dunam is 1000 m2 exactly — a tenth of a hectare — which makes it the easiest land unit on this page to work with. That figure is the metric dunam, adopted across the region in the twentieth century; the older Ottoman dunam was about 919 m2, so historical documents and modern deeds do not agree.
What people use it for
- Reading a listing or a document quoted in dunam.
- Checking a figure someone else converted.
- Getting the exact factor to reuse in a spreadsheet.
Details
| 1 Dunam | 0.247105 Acre |
|---|---|
| 1 Acre | 4.04686 Dunam |
| Definition | 1 dunam = 1000 m2 = 0.1 hectare = 0.2471 acre. The Ottoman dunam was about 919 m2. |
| Used in | Turkey, Israel, Palestine, Jordan, Lebanon, Syria, Iraq and the Balkans, where it is written donum, dunam, dunum or dhiraa depending on the country |
| Conversion type | Exact multiplication — both units are defined against the Square metre |
The maths behind it
This tool uses acre = dunam × 0.247105, an exact defined factor with no offset. Every intermediate value is shown on screen, so the result can be checked by hand.
1 dunam = 1000 m2 = 0.1 hectare = 0.2471 acre. The Ottoman dunam was about 919 m2.
Frequently asked questions
Is a Turkish donum the same as an Israeli dunam?
Today yes — both are the metric 1000 m2. They share an Ottoman origin, and both countries standardised on 1000 m2, so a Turkish donum and an Israeli or Jordanian dunam are the same area. Only pre-metric records differ.
What is the exact factor?
One dunam is 0.247105 acre, and one acre is 4.04686 dunam. It is a defined value rather than a measurement, so it does not change and the conversion is exact in both directions.
Does the Dunam to Acre cost anything?
There is no cost and no cap. The Dunam to Acre is not a demo of a paid product, so nothing is held back or watermarked.
Is what I paste into the Dunam to Acre stored?
No. The Dunam to Acre runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
What formula does the Dunam to Acre use?
It uses acre = dunam × 0.247105, an exact defined factor with no offset. The full working is printed under the result, so you can follow every step rather than trusting a black box.
Give me a worked example.
Enter 10 dunam and the Dunam to Acre returns 2.47105 acre.
When would I actually need the Dunam to Acre?
Typical uses: reading a listing or a document quoted in dunam. Checking a figure someone else converted. Getting the exact factor to reuse in a spreadsheet. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is there a catch?
1 dunam = 1000 m2 = 0.1 hectare = 0.2471 acre. The Ottoman dunam was about 919 m2.
What figures does the Dunam to Acre work from?
1 Dunam is 0.247105 Acre. 1 Acre is 4.04686 Dunam. Definition is 1 dunam = 1000 m2 = 0.1 hectare = 0.2471 acre. The Ottoman dunam was about 919 m2.. These are printed on the page itself, so you do not have to take them on trust.
Can I rely on this for exact work?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.
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