Convert Hectare to Square US Survey Foot
Convert hectares to square us survey feet instantly. 1 hectare = 107638.6736149054 square us survey foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square US Survey Foot to Hectare converter for the reverse conversion.
Units explained
Hectare
A hectare is a metric unit of area equal to 10,000 square meters, or one square hectometer. It is the most widely used metric unit for land measurement worldwide.
Defined as 100 ares, equal to one square hectometer. The name was introduced in 1795 in France as part of the metric system.
Hectares are the standard unit for agricultural land measurement worldwide except in the US (which uses acres). 1 hectare equals 2.47105 acres. In India, hectares are used in modern agricultural census and land records alongside traditional regional units.
Adopted in France in 1795; standardized internationally through the SI system.
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.
Hectare to Square US Survey Foot conversion formula
The relationship between hectares and square us survey feet:
To convert hectares to square us survey feet, multiply the value in hectares by 107638.6736149054. To reverse, multiply square us survey feet by 9.290341e-6.
How to use this converter
Type a value into the calculator. The result in square us survey 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 US Survey Foot to Hectare converter for the reverse direction.
Step-by-step: convert hectares to square us survey feet
- Write down the value in hectares (ha).
- Multiply that value by the factor 107638.6736149054.
- The product is the equivalent value in square us survey feet (sft²).
- To reverse, multiply the square us survey foot value by 9.290341e-6.
Worked examples
Example 1 — Convert 1 ha to sft²:
1 × 107638.6736149054 = 107638.6736149054 sft²
Example 2 — Convert 100 ha to sft²:
100 × 107638.6736149054 = 1.076387e+7 sft²
Real-world example — Geographic to architectural conversion
One hectare equals 100,000 square us survey feet. The conversion bridges geographic-scale survey work and architectural-scale building plans on the same drawing.
1 ha × 107638.6736149054 = 107638.6736149054 sft²
Real-world example — Geographic to architectural scale
One hectare equals 100,000 square us survey feet. Map scales use this when an architectural site plan (in the smaller unit) must be related to road-network plans (in the larger unit) on the same drawing.
1 ha × 107638.6736149054 = 107638.6736149054 sft²
Hectare to Square US Survey Foot conversion table
Standard reference values for converting hectares to square us survey feet:
| Hectare [ha] | Square US Survey Foot [sft²] |
|---|---|
| 0.01 | 1076.3867361491 |
| 0.1 | 10763.8673614905 |
| 1 | 107638.6736149054 |
| 2 | 215277.3472298107 |
| 3 | 322916.0208447161 |
| 4 | 430554.6944596214 |
| 5 | 538193.3680745268 |
| 10 | 1076386.7361490536 |
| 20 | 2152773.4722981071 |
| 30 | 3229160.2084471607 |
| 40 | 4305546.9445962142 |
| 50 | 5381933.6807452682 |
| 100 | 1.076387e+7 |
| 500 | 5.381934e+7 |
| 1000 | 1.076387e+8 |
Frequently asked questions
How many square us survey feet is 1 hectare?
How do I convert hectares to square us survey feet?
How do I convert square us survey feet back to hectares?
How many square us survey feet is 100 hectares?
Popular area unit conversions
Convert Hectare to other area units
Show all Hectare conversions
Metric / SI (15 units)
Imperial / US Customary (15 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 ha = 107638.6736149054 sft²) 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.