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Conversion Formula:
Convert Square Kilometer to Dunam (km² to du) instantly with accurate, readable results.
Convert between square meters, acres, square feet, hectares, and other common units with our Area Unit Converter. This intuitive unit conversion tool helps you calculate land size, floor space, and surface area across both metric and imperial systems. Whether you're working on real estate, construction, or geography tasks, our area unit conversion calculator ensures precise and instant results.
Square kilometer (km²) - large SI unit of area
Square kilometer is an SI unit of area equal to the area of a square with sides of 1 kilometer. Used for city sizes, land cover, and geographic mapping.
- Symbol: km²
- System: SI derived unit
- Exact relations: 1 km² = (1000 m)² = 1,000,000 m² = 100 ha = 10⁸ dm² = 10¹⁰ cm² = 10¹² mm²
- Imperial/US equivalents: 1 km² ≈ 0.386102159 mi² ≈ 247.105381 acres
- Typical examples: municipality areas, national park extents, watershed and habitat mapping
Dunam (donum; dönüm) - regional land area
Dunam is a regional metric land unit widely used in the Middle East, most commonly defined today as 1,000 square meters. Used in agriculture, real estate, and land records; note that historical values vary by country.
- Names/aliases: dunam, donum, dönüm; often equated with the decare
- System: Metric (non-SI, regional)
- Exact (modern metric): 1 dunam = 1,000 m² = 0.1 ha ≈ 0.247105381 acres
- Regional variants (historical/legal): Cyprus donum ≈ 1,338 m²; Iraq dunam = 2,500 m²; older Ottoman-era values ranged ~900–1,600 m²
- Typical examples: farm plots and urban parcels listed in dunams; planning and zoning documents across Israel, Palestine, Jordan, Lebanon, Turkey (usage/name varies)