Convert Square Inch to Square Link
Convert square inches to square links instantly. 1 square inch = 0.0159422509 square link — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Link to Square Inch converter for the reverse conversion.
Units explained
Square Inch
A square inch is an imperial unit of area equal to exactly 0.00064516 m², the area of a square with sides of one inch. It is widely used in the United States for small-area measurements.
Derived by squaring the inch. The inch was standardized to exactly 25.4 mm via the 1959 International Yard and Pound Agreement.
Square inches are used extensively in US engineering, manufacturing, real estate (for floor plans), and everyday small-area measurements. Engine displacement is often expressed in cubic inches but cross-sections in square inches.
Inch dates to medieval English usage; modern exact value standardized in 1959.
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 Inch to Square Link conversion formula
The relationship between square inches and square links:
To convert square inches to square links, multiply the value in square inches by 0.0159422509. To reverse, multiply square links by 62.7263996528.
How to use this converter
Type a value into the calculator. The result in square links 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 Link to Square Inch converter for the reverse direction.
Step-by-step: convert square inches to square links
- Write down the value in square inches (in²).
- Multiply that value by the factor 0.0159422509.
- The product is the equivalent value in square links (lk²).
- To reverse, multiply the square link value by 62.7263996528.
Worked examples
Example 1 — Convert 1 in² to lk²:
1 × 0.0159422509 = 0.0159422509 lk²
Example 2 — Convert 100 in² to lk²:
100 × 0.0159422509 = 1.5942250879 lk²
Real-world example — Packaging gauge
A 4-square inch plastic bag thickness is a common spec for grocery and freezer bags. Converting from square inches to square links is what packaging buyers do whenever they bridge US and metric supplier quotes.
4 in² × 0.0159422509 = 0.0637690035 lk²
Real-world example — Plastic film and laminate thickness
A 500-square inch sheet is a typical spec for ID-card laminates and film overlays. Converting to square links aligns the value with the unit most CAD systems and material datasheets prefer.
500 in² × 0.0159422509 = 7.9711254395 lk²
Square Inch to Square Link conversion table
Standard reference values for converting square inches to square links:
| Square Inch [in²] | Square Link [lk²] |
|---|---|
| 0.01 | 0.0001594225 |
| 0.1 | 0.0015942251 |
| 1 | 0.0159422509 |
| 2 | 0.0318845018 |
| 3 | 0.0478267526 |
| 4 | 0.0637690035 |
| 5 | 0.0797112544 |
| 10 | 0.1594225088 |
| 20 | 0.3188450176 |
| 30 | 0.4782675264 |
| 40 | 0.6376900352 |
| 50 | 0.7971125439 |
| 100 | 1.5942250879 |
| 500 | 7.9711254395 |
| 1000 | 15.942250879 |
Frequently asked questions
How many square links is 1 square inch?
How do I convert square inches to square links?
How do I convert square links back to square inches?
How many square links is 100 square inches?
Popular area unit conversions
Convert Square Inch to other area units
Show all Square Inch conversions
Metric / SI (16 units)
Imperial / US Customary (14 units)
US Survey (5 units)
Indian Subcontinent (16 units)
Other Regional (10 units)
Scientific / Physics (5 units)
Historical / Pre-metric European (6 units)
Sources & references
Conversion factor (1 in² = 0.0159422509 lk²) 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.