Convert Square US Survey Foot to Township
Convert square us survey feet to townships instantly. 1 square us survey foot = 9.963947e-10 township — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Township to Square US Survey Foot converter for the reverse conversion.
Units explained
Square US Survey Foot
A square US survey foot is a unit of area equal to approximately 0.0929034116 m². It is slightly larger than the square international foot due to historical surveying definitions.
Derived by squaring the US survey foot, which was defined as exactly 1200/3937 meter from 1893 to 2023. This produced a value about 2 parts per million larger than the international foot.
Square US survey feet appear in legacy US public land records and state plane coordinate systems established before 2023. The US officially retired the survey foot effective January 1, 2023.
Defined in 1893; officially retired January 2023, but legacy records remain.
Township
A township is a unit of area used in the US Public Land Survey System (PLSS), equal to 36 square miles (approximately 93.24 km²).
Defined by the Land Ordinance of 1785 as a 6-mile by 6-mile square, divided into 36 sections of 1 square mile each.
Townships are the largest standard unit in the PLSS and appear in US public land records, county boundaries, and historical land grants throughout the central and western US.
Defined by the US Land Ordinance of 1785.
Square US Survey Foot to Township conversion formula
The relationship between square us survey feet and townships:
To convert square us survey feet to townships, multiply the value in square us survey feet by 9.963947e-10. To reverse, multiply townships by 1.003618e+9.
How to use this converter
Type a value into the calculator. The result in townships updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Township to Square US Survey Foot converter for the reverse direction.
Step-by-step: convert square us survey feet to townships
- Write down the value in square us survey feet (sft²).
- Multiply that value by the factor 9.963947e-10.
- The product is the equivalent value in townships (twp).
- To reverse, multiply the township value by 1.003618e+9.
Worked examples
Example 1 — Convert 1 sft² to twp:
1 × 9.963947e-10 = 9.963947e-10 twp
Example 2 — Convert 100 sft² to twp:
100 × 9.963947e-10 = 9.963947e-8 twp
Real-world example — Hardware-scale dimensions
A 10-square us survey foot fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between square us survey feet and townships daily when mixing metric and imperial tools.
10 sft² × 9.963947e-10 = 9.963947e-9 twp
Real-world example — Postcard and small-object dimensions
A postcard is about 5 square us survey feet wide. Converting to townships is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 sft² × 9.963947e-10 = 4.981973e-9 twp
Real-world example — Ruler-scale measurements
A 30-square us survey foot school ruler converts cleanly to townships — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 sft² × 9.963947e-10 = 2.989184e-8 twp
Square US Survey Foot to Township conversion table
Standard reference values for converting square us survey feet to townships:
| Square US Survey Foot [sft²] | Township [twp] |
|---|---|
| 0.01 | 9.963947e-12 |
| 0.1 | 9.963947e-11 |
| 1 | 9.963947e-10 |
| 2 | 1.992789e-9 |
| 3 | 2.989184e-9 |
| 4 | 3.985579e-9 |
| 5 | 4.981973e-9 |
| 10 | 9.963947e-9 |
| 20 | 1.992789e-8 |
| 30 | 2.989184e-8 |
| 40 | 3.985579e-8 |
| 50 | 4.981973e-8 |
| 100 | 9.963947e-8 |
| 500 | 4.981973e-7 |
| 1000 | 9.963947e-7 |
Frequently asked questions
How many townships is 1 square us survey foot?
How do I convert square us survey feet to townships?
How do I convert townships back to square us survey feet?
How many townships is 100 square us survey feet?
Popular area unit conversions
Convert Square US Survey Foot to other area units
Show all Square US Survey Foot conversions
Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 sft² = 9.963947e-10 twp) 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.