Convert Square Chain to Square Foot
Convert square chains to square feet instantly. 1 square chain = 4355.9999995694 square foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Foot to Square Chain converter for the reverse conversion.
Units explained
Square Chain
A square chain is an imperial unit of area equal to approximately 404.686 m². It equals 1/10 of an acre.
Derived by squaring the chain (66 feet or 22 yards). The chain was defined by Edmund Gunter in 1620 specifically so that 10 square chains equal exactly one acre.
Square chains appear in US Public Land Survey System (PLSS) records and historical English property documents. The 10-to-1 ratio with acres made early survey arithmetic easier.
Defined by Edmund Gunter in 1620 specifically for surveying convenience.
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.
Square Chain to Square Foot conversion formula
The relationship between square chains and square feet:
To convert square chains to square feet, multiply the value in square chains by 4355.9999995694. To reverse, multiply square feet by 0.0002295684.
How to use this converter
Type a value into the calculator. The result in square 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 Foot to Square Chain converter for the reverse direction.
Step-by-step: convert square chains to square feet
- Write down the value in square chains (ch²).
- Multiply that value by the factor 4355.9999995694.
- The product is the equivalent value in square feet (ft²).
- To reverse, multiply the square foot value by 0.0002295684.
Worked examples
Example 1 — Convert 1 ch² to ft²:
1 × 4355.9999995694 = 4355.9999995694 ft²
Example 2 — Convert 100 ch² to ft²:
100 × 4355.9999995694 = 435599.9999569443 ft²
Square Chain to Square Foot conversion table
Standard reference values for converting square chains to square feet:
| Square Chain [ch²] | Square Foot [ft²] |
|---|---|
| 0.01 | 43.5599999957 |
| 0.1 | 435.5999999569 |
| 1 | 4355.9999995694 |
| 2 | 8711.9999991389 |
| 3 | 13067.9999987083 |
| 4 | 17423.9999982778 |
| 5 | 21779.9999978472 |
| 10 | 43559.9999956944 |
| 20 | 87119.9999913889 |
| 30 | 130679.9999870833 |
| 40 | 174239.9999827778 |
| 50 | 217799.9999784722 |
| 100 | 435599.9999569443 |
| 500 | 2177999.9997847215 |
| 1000 | 4355999.9995694431 |
Frequently asked questions
How many square feet is 1 square chain?
How do I convert square chains to square feet?
How do I convert square feet back to square chains?
How many square feet is 100 square chains?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (14 units)
Sources & references
Conversion factor (1 ch² = 4355.9999995694 ft²) 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.