Convert acres to Dunam (Ottoman)
Middle East & North Africa · Middle East Land · historical · colonial
Varies by locality The unit takes different values in different localities. The figure shown is the most widely cited standard, not a legal definition.
1 acre = 4.40211 Dunam (Ottoman)
Dunam (Ottoman) = acres × 4.4021064
Convert any amount
This unit varies by region
Reported range: 919–2500 m². Confirm the local standard before using this figure in a contract, land record or trade document.
- Dunam (Ottoman) (Ottoman Empire): 919.3 square metre
- Dunam (Metric) (Modern Standard): 1,000 square metre
- Dunam (Iraqi) (Iraq): 2,500 square metre
acres to Dunam (Ottoman) table
| acres | Dunam (Ottoman) |
|---|---|
| 0.25 acres | 1.10053 Dunam (Ottoman) |
| 0.5 acres | 2.20105 Dunam (Ottoman) |
| 1 acre | 4.40211 Dunam (Ottoman) |
| 2 acres | 8.80421 Dunam (Ottoman) |
| 3 acres | 13.2063 Dunam (Ottoman) |
| 4 acres | 17.6084 Dunam (Ottoman) |
| 5 acres | 22.0105 Dunam (Ottoman) |
| 10 acres | 44.0211 Dunam (Ottoman) |
| 20 acres | 88.0421 Dunam (Ottoman) |
| 25 acres | 110.053 Dunam (Ottoman) |
| 50 acres | 220.105 Dunam (Ottoman) |
| 100 acres | 440.211 Dunam (Ottoman) |
About the Dunam (Ottoman)
Ottoman standard. Modern metric dunam = 1000 m².
- Symbol
- dunam
- Value in SI
- 1 Dunam (Ottoman) = 919.3 square metre
- Typical use
- agriculture
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI square metre. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other middle east land units in the Middle East & North Africa family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many Dunam (Ottoman) are in a acre?
1 acre = 4.40211 Dunam (Ottoman). Multiply the number of acres by 4.4021064 to get Dunam (Ottoman).
What is Dunam (Ottoman) used for?
Ottoman standard. Modern metric dunam = 1000 m². It is classified as historical and dates from the colonial period.
Is the Dunam (Ottoman) value exact?
No. Dunam (Ottoman) varies by locality (919–2500 m²), so treat this conversion as the most widely cited standard rather than a legal definition.
How reliable is this Dunam (Ottoman) conversion?
Varies by locality — The unit takes different values in different localities. The figure shown is the most widely cited standard, not a legal definition. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert acres to Dunam (Ottoman). UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/acre-to-dunam-ottoman
Report an incorrect value or source
Regional units vary by district and by century. If this figure, its variant list or its citation is wrong where you are, tell us — the report carries the page context automatically.