Convert Square Kilometer to Rood
Convert square kilometers to roods instantly. 1 square kilometer = 988.4215258687 rood — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Rood to Square Kilometer converter for the reverse conversion.
Units explained
Square Kilometer
A square kilometer is a metric unit of area equal to 1,000,000 m² (one million square meters), or 100 hectares. It is used for measuring large land areas, regional geography, and country-scale statistics.
Derived by squaring the kilometer (1000 m). The kilo- prefix comes from the Greek 'chilioi' (thousand).
Square kilometers express the area of cities, districts, lakes, forests, and entire countries. India's total area is approximately 3,287,263 km². 1 km² equals 100 hectares or about 247.105 acres.
Kilometer has been part of the metric system since 1795.
Rood
A rood is an imperial unit of area equal to approximately 1011.71 m², or 1/4 of an acre. It was historically used in England and parts of the British Empire.
Defined as one-quarter of an acre; historically used in medieval English farming as the area one ox could plow in a day. The word relates to 'rod' as a measure of length used in plot dimensions.
Roods appear in historical English farming records, parish records, and old property deeds. The unit is functionally obsolete today.
Medieval English farming origin; standardized via the 1959 International Yard and Pound Agreement.
Square Kilometer to Rood conversion formula
The relationship between square kilometers and roods:
To convert square kilometers to roods, multiply the value in square kilometers by 988.4215258687. To reverse, multiply roods by 0.0010117141.
How to use this converter
Type a value into the calculator. The result in roods updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Rood to Square Kilometer converter for the reverse direction.
Step-by-step: convert square kilometers to roods
- Write down the value in square kilometers (km²).
- Multiply that value by the factor 988.4215258687.
- The product is the equivalent value in roods (rood).
- To reverse, multiply the rood value by 0.0010117141.
Worked examples
Example 1 — Convert 1 km² to rood:
1 × 988.4215258687 = 988.4215258687 rood
Example 2 — Convert 100 km² to rood:
100 × 988.4215258687 = 98842.1525868661 rood
Square Kilometer to Rood conversion table
Standard reference values for converting square kilometers to roods:
| Square Kilometer [km²] | Rood [rood] |
|---|---|
| 0.01 | 9.8842152587 |
| 0.1 | 98.8421525869 |
| 1 | 988.4215258687 |
| 2 | 1976.8430517373 |
| 3 | 2965.264577606 |
| 4 | 3953.6861034746 |
| 5 | 4942.1076293433 |
| 10 | 9884.2152586866 |
| 20 | 19768.4305173732 |
| 30 | 29652.6457760598 |
| 40 | 39536.8610347465 |
| 50 | 49421.0762934331 |
| 100 | 98842.1525868661 |
| 500 | 494210.7629343307 |
| 1000 | 988421.5258686614 |
Frequently asked questions
How many roods is 1 square kilometer?
How do I convert square kilometers to roods?
How do I convert roods back to square kilometers?
How many roods is 100 square kilometers?
Popular area unit conversions
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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)
Sources & references
Conversion factor (1 km² = 988.4215258687 rood) 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.