Convert Square Furlong to Square Rod
Convert square furlongs to square rods instantly. 1 square furlong = 1600 square rod — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Rod to Square Furlong converter for the reverse conversion.
Units explained
Square Furlong
A square furlong is an imperial unit of area equal to exactly 40,468.564 m², or 10 acres.
Derived by squaring the furlong (660 feet or 1/8 mile). The furlong itself comes from medieval English 'furrow long', the length of a plowed furrow.
Square furlongs are rarely used today. The unit appears occasionally in historical English farming records and in some horseracing contexts (though usually as length, not area).
Medieval English origin; standardized via the 1959 International Yard and Pound Agreement.
Square Rod
A square rod is an imperial unit of area equal to approximately 25.293 m². It is part of the historical English land survey system.
Derived by squaring the rod (16.5 feet or 1/4 chain). The rod, perch, and pole are three names for the same length.
Square rods appear in historical English and American land surveys and legacy property records. The unit is largely obsolete today, surviving mainly in legal descriptions of older land grants.
Standardized via the 1959 International Yard and Pound Agreement.
Square Furlong to Square Rod conversion formula
The relationship between square furlongs and square rods:
To convert square furlongs to square rods, multiply the value in square furlongs by 1600. To reverse, multiply square rods by 0.000625.
How to use this converter
Type a value into the calculator. The result in square rods 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 Rod to Square Furlong converter for the reverse direction.
Step-by-step: convert square furlongs to square rods
- Write down the value in square furlongs (fur²).
- Multiply that value by the factor 1600.
- The product is the equivalent value in square rods (rd²).
- To reverse, multiply the square rod value by 0.000625.
Worked examples
Example 1 — Convert 1 fur² to rd²:
1 × 1600 = 1600 rd²
Example 2 — Convert 100 fur² to rd²:
100 × 1600 = 160000 rd²
Real-world example — Road-sign distances across systems
A 100-square furlong road sign converts cleanly into square rods — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 fur² × 1600 = 160000 rd²
Real-world example — Endurance race distances
A 50-square furlong cycling or running race converts to a recognizable distance in square rods. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 fur² × 1600 = 80000 rd²
Real-world example — Maritime exclusion zone
A 200-square furlong exclusion zone (a common maritime boundary) converts to a different value in square rods that's useful when describing the same zone in everyday land-distance units.
200 fur² × 1600 = 320000 rd²
Square Furlong to Square Rod conversion table
Standard reference values for converting square furlongs to square rods:
| Square Furlong [fur²] | Square Rod [rd²] |
|---|---|
| 0.01 | 16 |
| 0.1 | 160 |
| 1 | 1600 |
| 2 | 3200 |
| 3 | 4800 |
| 4 | 6400 |
| 5 | 8000 |
| 10 | 16000 |
| 20 | 32000 |
| 30 | 48000 |
| 40 | 64000 |
| 50 | 80000 |
| 100 | 160000 |
| 500 | 800000 |
| 1000 | 1600000 |
Frequently asked questions
How many square rods is 1 square furlong?
How do I convert square furlongs to square rods?
How do I convert square rods back to square furlongs?
How many square rods is 100 square furlongs?
Popular area unit conversions
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Metric / SI (5 units)
Imperial / US Customary (14 units)
Sources & references
Conversion factor (1 fur² = 1600 rd²) 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.