Convert Square Kilometer to Square Chain
Convert square kilometers to square chains instantly. 1 square kilometer = 2471.0538149159 square chain — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Chain 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.
Square Chain
A square chain is an imperial unit of area equal to approximately 404.686 m². It equals 1/10 of an acre.
Derived by squaring the chain (66 feet or 22 yards). The chain was defined by Edmund Gunter in 1620 specifically so that 10 square chains equal exactly one acre.
Square chains appear in US Public Land Survey System (PLSS) records and historical English property documents. The 10-to-1 ratio with acres made early survey arithmetic easier.
Defined by Edmund Gunter in 1620 specifically for surveying convenience.
Square Kilometer to Square Chain conversion formula
The relationship between square kilometers and square chains:
To convert square kilometers to square chains, multiply the value in square kilometers by 2471.0538149159. To reverse, multiply square chains by 0.0004046856.
How to use this converter
Type a value into the calculator. The result in square chains 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 Chain to Square Kilometer converter for the reverse direction.
Step-by-step: convert square kilometers to square chains
- Write down the value in square kilometers (km²).
- Multiply that value by the factor 2471.0538149159.
- The product is the equivalent value in square chains (ch²).
- To reverse, multiply the square chain value by 0.0004046856.
Worked examples
Example 1 — Convert 1 km² to ch²:
1 × 2471.0538149159 = 2471.0538149159 ch²
Example 2 — Convert 100 km² to ch²:
100 × 2471.0538149159 = 247105.3814915897 ch²
Square Kilometer to Square Chain conversion table
Standard reference values for converting square kilometers to square chains:
| Square Kilometer [km²] | Square Chain [ch²] |
|---|---|
| 0.01 | 24.7105381492 |
| 0.1 | 247.1053814916 |
| 1 | 2471.0538149159 |
| 2 | 4942.1076298318 |
| 3 | 7413.1614447477 |
| 4 | 9884.2152596636 |
| 5 | 12355.2690745795 |
| 10 | 24710.538149159 |
| 20 | 49421.0762983179 |
| 30 | 74131.6144474769 |
| 40 | 98842.1525966359 |
| 50 | 123552.6907457949 |
| 100 | 247105.3814915897 |
| 500 | 1235526.9074579487 |
| 1000 | 2471053.8149158973 |
Frequently asked questions
How many square chains is 1 square kilometer?
How do I convert square kilometers to square chains?
How do I convert square chains back to square kilometers?
How many square chains is 100 square kilometers?
Popular area unit conversions
Convert Square Kilometer 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)
Sources & references
Conversion factor (1 km² = 2471.0538149159 ch²) 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.