Convert Square Link to Square Kilometer
Convert square links to square kilometers instantly. 1 square link = 4.046856e-8 square kilometer — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Kilometer to Square Link converter for the reverse conversion.
Units explained
Square Link
A square link is an imperial unit of area equal to approximately 0.0405 m². It is part of the chain-link surveying system used historically for land measurement.
Derived by squaring the link (1/100 of a chain = 7.92 inches). The Gunter's chain was introduced by English mathematician Edmund Gunter in 1620 for land surveying.
Square links appear in historical land surveys and legacy property records, particularly in the US Public Land Survey System (PLSS). Modern surveys use feet or meters instead.
Gunter's chain introduced in 1620; standardized via the 1959 International Yard and Pound Agreement.
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 Link to Square Kilometer conversion formula
The relationship between square links and square kilometers:
To convert square links to square kilometers, multiply the value in square links by 4.046856e-8. To reverse, multiply square kilometers by 2.471054e+7.
How to use this converter
Type a value into the calculator. The result in square kilometers 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 Kilometer to Square Link converter for the reverse direction.
Step-by-step: convert square links to square kilometers
- Write down the value in square links (lk²).
- Multiply that value by the factor 4.046856e-8.
- The product is the equivalent value in square kilometers (km²).
- To reverse, multiply the square kilometer value by 2.471054e+7.
Worked examples
Example 1 — Convert 1 lk² to km²:
1 × 4.046856e-8 = 4.046856e-8 km²
Example 2 — Convert 100 lk² to km²:
100 × 4.046856e-8 = 4.046856e-6 km²
Real-world example — Ruler-scale measurements
A 30-square link school ruler converts cleanly to square kilometers — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 lk² × 4.046856e-8 = 1.214057e-6 km²
Real-world example — Hardware-scale dimensions
A 10-square link fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between square links and square kilometers daily when mixing metric and imperial tools.
10 lk² × 4.046856e-8 = 4.046856e-7 km²
Real-world example — Postcard and small-object dimensions
A postcard is about 5 square links wide. Converting to square kilometers is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 lk² × 4.046856e-8 = 2.023428e-7 km²
Square Link to Square Kilometer conversion table
Standard reference values for converting square links to square kilometers:
| Square Link [lk²] | Square Kilometer [km²] |
|---|---|
| 0.01 | 4.046856e-10 |
| 0.1 | 4.046856e-9 |
| 1 | 4.046856e-8 |
| 2 | 8.093713e-8 |
| 3 | 1.214057e-7 |
| 4 | 1.618743e-7 |
| 5 | 2.023428e-7 |
| 10 | 4.046856e-7 |
| 20 | 8.093713e-7 |
| 30 | 1.214057e-6 |
| 40 | 1.618743e-6 |
| 50 | 2.023428e-6 |
| 100 | 4.046856e-6 |
| 500 | 2.023428e-5 |
| 1000 | 4.046856e-5 |
Frequently asked questions
How many square kilometers is 1 square link?
How do I convert square links to square kilometers?
How do I convert square kilometers back to square links?
How many square kilometers is 100 square links?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (14 units)
Sources & references
Conversion factor (1 lk² = 4.046856e-8 km²) 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.