Convert Square Link to Square Foot
Convert square links to square feet instantly. 1 square link = 0.4355999976 square foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Foot 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 Foot
A square foot is an imperial unit of area equal to exactly 0.09290304 m². It is the dominant unit for real estate area measurement in the United States and is widely used in India for residential property listings.
Derived by squaring the foot. The foot was standardized to exactly 0.3048 m via the 1959 International Yard and Pound Agreement.
Square feet are the standard unit for US real estate floor area, HVAC capacity ratings (BTU per ft²), commercial leasing, and construction. In India, square feet is the dominant unit for residential property advertisements alongside traditional regional units.
Foot dates to ancient civilizations; modern exact value standardized in 1959.
Square Link to Square Foot conversion formula
The relationship between square links and square feet:
To convert square links to square feet, multiply the value in square links by 0.4355999976. To reverse, multiply square feet by 2.2956841266.
How to use this converter
Type a value into the calculator. The result in square feet 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 Foot to Square Link converter for the reverse direction.
Step-by-step: convert square links to square feet
- Write down the value in square links (lk²).
- Multiply that value by the factor 0.4355999976.
- The product is the equivalent value in square feet (ft²).
- To reverse, multiply the square foot value by 2.2956841266.
Worked examples
Example 1 — Convert 1 lk² to ft²:
1 × 0.4355999976 = 0.4355999976 ft²
Example 2 — Convert 100 lk² to ft²:
100 × 0.4355999976 = 43.5599997589 ft²
Real-world example — Ruler-scale measurements
A 30-square link school ruler converts cleanly to square feet — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 lk² × 0.4355999976 = 13.0679999277 ft²
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 feet daily when mixing metric and imperial tools.
10 lk² × 0.4355999976 = 4.3559999759 ft²
Real-world example — Postcard and small-object dimensions
A postcard is about 5 square links wide. Converting to square feet is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 lk² × 0.4355999976 = 2.1779999879 ft²
Square Link to Square Foot conversion table
Standard reference values for converting square links to square feet:
| Square Link [lk²] | Square Foot [ft²] |
|---|---|
| 0.01 | 0.004356 |
| 0.1 | 0.0435599998 |
| 1 | 0.4355999976 |
| 2 | 0.8711999952 |
| 3 | 1.3067999928 |
| 4 | 1.7423999904 |
| 5 | 2.1779999879 |
| 10 | 4.3559999759 |
| 20 | 8.7119999518 |
| 30 | 13.0679999277 |
| 40 | 17.4239999036 |
| 50 | 21.7799998794 |
| 100 | 43.5599997589 |
| 500 | 217.7999987944 |
| 1000 | 435.5999975889 |
Frequently asked questions
How many square feet is 1 square link?
How do I convert square links to square feet?
How do I convert square feet back to square links?
How many square feet is 100 square links?
Popular area unit conversions
Convert Square Link to other area units
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Metric / SI (5 units)
Imperial / US Customary (14 units)
Sources & references
Conversion factor (1 lk² = 0.4355999976 ft²) 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.