Convert Square Foot to Arpent (French)
Convert square feet to arpents instantly. 1 square foot = 2.200972e-5 arpent (french) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Arpent (French) to Square Foot converter for the reverse conversion.
Units explained
Square Foot
A square foot is an imperial unit of area equal to exactly 0.09290304 m². It is the dominant unit for real estate area measurement in the United States and is widely used in India for residential property listings.
Derived by squaring the foot. The foot was standardized to exactly 0.3048 m via the 1959 International Yard and Pound Agreement.
Square feet are the standard unit for US real estate floor area, HVAC capacity ratings (BTU per ft²), commercial leasing, and construction. In India, square feet is the dominant unit for residential property advertisements alongside traditional regional units.
Foot dates to ancient civilizations; modern exact value standardized in 1959.
Arpent (French)
A French arpent is a historical unit of land area used in pre-metric France, approximately 4221 m² (close to one acre).
Originated as a medieval French land unit; varied considerably by province. The 'arpent de Paris' was officially fixed at 100 perches squared, the perche being 18 pieds.
French arpents appear in pre-revolutionary French land records and in genealogical research. The unit was largely abolished after the French Revolution in favor of metric units.
Medieval French origin; abolished after the French Revolution in favor of metric.
Square Foot to Arpent (French) conversion formula
The relationship between square feet and arpents:
To convert square feet to arpents, multiply the value in square feet by 2.200972e-5. To reverse, multiply arpents by 45434.4658689317.
How to use this converter
Type a value into the calculator. The result in arpents updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Arpent (French) to Square Foot converter for the reverse direction.
Step-by-step: convert square feet to arpents
- Write down the value in square feet (ft²).
- Multiply that value by the factor 2.200972e-5.
- The product is the equivalent value in arpents (arpent).
- To reverse, multiply the arpent (french) value by 45434.4658689317.
Worked examples
Example 1 — Convert 1 ft² to arpent:
1 × 2.200972e-5 = 2.200972e-5 arpent
Example 2 — Convert 100 ft² to arpent:
100 × 2.200972e-5 = 0.0022009723 arpent
Real-world example — Small to geographic-scale
100,000 square feet equals one arpent (french) — a useful conversion when small-scale survey diagrams must be related to road-network distances on a different map.
100000 ft² × 2.200972e-5 = 2.2009722814 arpent
Real-world example — Architectural to geographic scale
A 100,000-square foot measurement equals one arpent (french). The five-order-of-magnitude scale change comes up in mapping work where architectural site plans must be related to road-network maps.
100000 ft² × 2.200972e-5 = 2.2009722814 arpent
Square Foot to Arpent (French) conversion table
Standard reference values for converting square feet to arpents:
| Square Foot [ft²] | Arpent (French) [arpent] |
|---|---|
| 0.01 | 2.200972e-7 |
| 0.1 | 2.200972e-6 |
| 1 | 2.200972e-5 |
| 2 | 4.401945e-5 |
| 3 | 6.602917e-5 |
| 4 | 8.803889e-5 |
| 5 | 0.0001100486 |
| 10 | 0.0002200972 |
| 20 | 0.0004401945 |
| 30 | 0.0006602917 |
| 40 | 0.0008803889 |
| 50 | 0.0011004861 |
| 100 | 0.0022009723 |
| 500 | 0.0110048614 |
| 1000 | 0.0220097228 |
Frequently asked questions
How many arpents is 1 square foot?
How do I convert square feet to arpents?
How do I convert arpents back to square feet?
How many arpents is 100 square feet?
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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 ft² = 2.200972e-5 arpent) 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.