Convert Hectare to Square Dekameter
Convert hectares to square dekameters instantly. 1 hectare = 100 square dekameter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Dekameter to Hectare converter for the reverse conversion.
Units explained
Hectare
A hectare is a metric unit of area equal to 10,000 square meters, or one square hectometer. It is the most widely used metric unit for land measurement worldwide.
Defined as 100 ares, equal to one square hectometer. The name was introduced in 1795 in France as part of the metric system.
Hectares are the standard unit for agricultural land measurement worldwide except in the US (which uses acres). 1 hectare equals 2.47105 acres. In India, hectares are used in modern agricultural census and land records alongside traditional regional units.
Adopted in France in 1795; standardized internationally through the SI system.
Square Dekameter
A square dekameter is a metric unit of area equal to 100 m². It is identical in value to the are.
Derived by squaring the dekameter (10 m). The deca- prefix comes from the Greek 'deka' (ten).
Square dekameters are functionally equivalent to ares. In contexts where the prefix system is preferred, dam² may be used in place of 'are' for clarity.
Dekameter has been part of the metric system since 1795.
Hectare to Square Dekameter conversion formula
The relationship between hectares and square dekameters:
To convert hectares to square dekameters, multiply the value in hectares by 100. To reverse, multiply square dekameters by 0.01.
How to use this converter
Type a value into the calculator. The result in square dekameters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Square Dekameter to Hectare converter for the reverse direction.
Step-by-step: convert hectares to square dekameters
- Write down the value in hectares (ha).
- Multiply that value by the factor 100.
- The product is the equivalent value in square dekameters (dam²).
- To reverse, multiply the square dekameter value by 0.01.
Worked examples
Example 1 — Convert 1 ha to dam²:
1 × 100 = 100 dam²
Example 2 — Convert 100 ha to dam²:
100 × 100 = 10000 dam²
Real-world example — Maritime exclusion zone
A 200-hectare exclusion zone (a common maritime boundary) converts to a different value in square dekameters that's useful when describing the same zone in everyday land-distance units.
200 ha × 100 = 20000 dam²
Real-world example — Coastal cruise distances
A 10-hectare coastal sailing route converts to a different value in square dekameters — useful for cruise operators who switch between maritime, aviation, and road-distance units depending on the leg of the trip.
10 ha × 100 = 1000 dam²
Real-world example — Road-sign distances across systems
A 100-hectare road sign converts cleanly into square dekameters — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 ha × 100 = 10000 dam²
Hectare to Square Dekameter conversion table
Standard reference values for converting hectares to square dekameters:
| Hectare [ha] | Square Dekameter [dam²] |
|---|---|
| 0.01 | 1 |
| 0.1 | 10 |
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
| 4 | 400 |
| 5 | 500 |
| 10 | 1000 |
| 20 | 2000 |
| 30 | 3000 |
| 40 | 4000 |
| 50 | 5000 |
| 100 | 10000 |
| 500 | 50000 |
| 1000 | 100000 |
Frequently asked questions
How many square dekameters is 1 hectare?
How do I convert hectares to square dekameters?
How do I convert square dekameters back to hectares?
How many square dekameters is 100 hectares?
Popular area unit conversions
Convert Hectare to other area units
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Metric / SI (15 units)
Imperial / US Customary (15 units)
US Survey (5 units)
Indian Subcontinent (16 units)
Other Regional (10 units)
Scientific / Physics (5 units)
Historical / Pre-metric European (6 units)
Sources & references
Conversion factor (1 ha = 100 dam²) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.