Convert Square Rod to Hectare
Convert square rods to hectares instantly. 1 square rod = 0.0025292853 hectare — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Hectare to Square Rod converter for the reverse conversion.
Units explained
Square Rod
A square rod is an imperial unit of area equal to approximately 25.293 m². It is part of the historical English land survey system.
Derived by squaring the rod (16.5 feet or 1/4 chain). The rod, perch, and pole are three names for the same length.
Square rods appear in historical English and American land surveys and legacy property records. The unit is largely obsolete today, surviving mainly in legal descriptions of older land grants.
Standardized via the 1959 International Yard and Pound Agreement.
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 Rod to Hectare conversion formula
The relationship between square rods and hectares:
To convert square rods to hectares, multiply the value in square rods by 0.0025292853. To reverse, multiply hectares by 395.3686103475.
How to use this converter
Type a value into the calculator. The result in hectares updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Hectare to Square Rod converter for the reverse direction.
Step-by-step: convert square rods to hectares
- Write down the value in square rods (rd²).
- Multiply that value by the factor 0.0025292853.
- The product is the equivalent value in hectares (ha).
- To reverse, multiply the hectare value by 395.3686103475.
Worked examples
Example 1 — Convert 1 rd² to ha:
1 × 0.0025292853 = 0.0025292853 ha
Example 2 — Convert 100 rd² to ha:
100 × 0.0025292853 = 0.2529285264 ha
Square Rod to Hectare conversion table
Standard reference values for converting square rods to hectares:
| Square Rod [rd²] | Hectare [ha] |
|---|---|
| 0.01 | 2.529285e-5 |
| 0.1 | 0.0002529285 |
| 1 | 0.0025292853 |
| 2 | 0.0050585705 |
| 3 | 0.0075878558 |
| 4 | 0.0101171411 |
| 5 | 0.0126464263 |
| 10 | 0.0252928526 |
| 20 | 0.0505857053 |
| 30 | 0.0758785579 |
| 40 | 0.1011714106 |
| 50 | 0.1264642632 |
| 100 | 0.2529285264 |
| 500 | 1.264642632 |
| 1000 | 2.529285264 |
Frequently asked questions
How many hectares is 1 square rod?
How do I convert square rods to hectares?
How do I convert hectares back to square rods?
How many hectares is 100 square rods?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (14 units)
Sources & references
Conversion factor (1 rd² = 0.0025292853 ha) 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 Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.