Convert Square US Survey Mile to Section
Convert square us survey miles to sections instantly. 1 square us survey mile = 1.0000039999 section — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Section to Square US Survey Mile converter for the reverse conversion.
Units explained
Square US Survey Mile
A square US survey mile is approximately 2,589,998 m², slightly larger than the international square mile.
Derived by squaring the US survey mile (5280 US survey feet).
Square US survey miles appear in older US Public Land Survey System records and state plane coordinate systems pre-dating 2023.
Defined in 1893; retired January 2023.
Section
A section is a unit of area used in the US Public Land Survey System, equal to 1 square mile (640 acres or approximately 2.59 km²).
Defined by the Land Ordinance of 1785 as 1/36 of a township. Sections are numbered 1-36 within each township.
Sections are the fundamental unit of US public land records in PLSS states (essentially the central and western US). Property descriptions like 'NE quarter of section 14, township 3 north, range 2 east' use this system.
Defined by the US Land Ordinance of 1785.
Square US Survey Mile to Section conversion formula
The relationship between square us survey miles and sections:
To convert square us survey miles to sections, multiply the value in square us survey miles by 1.0000039999. To reverse, multiply sections by 0.9999960001.
How to use this converter
Type a value into the calculator. The result in sections updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Section to Square US Survey Mile converter for the reverse direction.
Step-by-step: convert square us survey miles to sections
- Write down the value in square us survey miles (smi²).
- Multiply that value by the factor 1.0000039999.
- The product is the equivalent value in sections (sec).
- To reverse, multiply the section value by 0.9999960001.
Worked examples
Example 1 — Convert 1 smi² to sec:
1 × 1.0000039999 = 1.0000039999 sec
Example 2 — Convert 100 smi² to sec:
100 × 1.0000039999 = 100.0003999889 sec
Square US Survey Mile to Section conversion table
Standard reference values for converting square us survey miles to sections:
| Square US Survey Mile [smi²] | Section [sec] |
|---|---|
| 0.01 | 0.01000004 |
| 0.1 | 0.1000004 |
| 1 | 1.0000039999 |
| 2 | 2.0000079998 |
| 3 | 3.0000119997 |
| 4 | 4.0000159996 |
| 5 | 5.0000199994 |
| 10 | 10.0000399989 |
| 20 | 20.0000799978 |
| 30 | 30.0001199967 |
| 40 | 40.0001599955 |
| 50 | 50.0001999944 |
| 100 | 100.0003999889 |
| 500 | 500.0019999443 |
| 1000 | 1000.0039998886 |
Frequently asked questions
How many sections is 1 square us survey mile?
How do I convert square us survey miles to sections?
How do I convert sections back to square us survey miles?
How many sections is 100 square us survey miles?
Popular area unit conversions
Convert Square US Survey Mile to other area units
Show all Square US Survey Mile conversions
Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 smi² = 1.0000039999 sec) 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.