Convert Square Link to Square Thou
Convert square links to square thous instantly. 1 square link = 6.27264e+7 square thou — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Thou 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 Thou
A square thou is an imperial unit of area equal to 6.4516×10⁻¹⁰ m², identical to the square mil. The word 'thou' is short for 'thousandth' (of an inch).
Identical in value to the square mil; 'thou' is the British engineering term, 'mil' is the American term. Both refer to 1/1000 of an inch.
Square thous are used in British and Commonwealth engineering contexts where 'thou' is preferred over 'mil', particularly in mechanical engineering tolerance specifications.
Standardized via the 1959 International Yard and Pound Agreement.
Square Link to Square Thou conversion formula
The relationship between square links and square thous:
To convert square links to square thous, multiply the value in square links by 6.27264e+7. To reverse, multiply square thous by 1.594225e-8.
How to use this converter
Type a value into the calculator. The result in square thous 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 Thou to Square Link converter for the reverse direction.
Step-by-step: convert square links to square thous
- Write down the value in square links (lk²).
- Multiply that value by the factor 6.27264e+7.
- The product is the equivalent value in square thous (thou²).
- To reverse, multiply the square thou value by 1.594225e-8.
Worked examples
Example 1 — Convert 1 lk² to thou²:
1 × 6.27264e+7 = 6.27264e+7 thou²
Example 2 — Convert 100 lk² to thou²:
100 × 6.27264e+7 = 6.27264e+9 thou²
Real-world example — Centimeter to wavelength scale
One square link equals 10 million square thous. Physics curricula use this kind of conversion to relate everyday measurements to atomic and optical scales.
1 lk² × 6.27264e+7 = 6.27264e+7 thou²
Real-world example — Small-scale to atomic-scale
One square link equals 10 million square thous — useful for physics curricula that relate everyday measurements to atomic and optical scales.
1 lk² × 6.27264e+7 = 6.27264e+7 thou²
Square Link to Square Thou conversion table
Standard reference values for converting square links to square thous:
| Square Link [lk²] | Square Thou [thou²] |
|---|---|
| 0.01 | 627263.9965279931 |
| 0.1 | 6272639.9652799312 |
| 1 | 6.27264e+7 |
| 2 | 1.254528e+8 |
| 3 | 1.881792e+8 |
| 4 | 2.509056e+8 |
| 5 | 3.13632e+8 |
| 10 | 6.27264e+8 |
| 20 | 1.254528e+9 |
| 30 | 1.881792e+9 |
| 40 | 2.509056e+9 |
| 50 | 3.13632e+9 |
| 100 | 6.27264e+9 |
| 500 | 3.13632e+10 |
| 1000 | 6.27264e+10 |
Frequently asked questions
How many square thous is 1 square link?
How do I convert square links to square thous?
How do I convert square thous back to square links?
How many square thous 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 = 6.27264e+7 thou²) 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.