Furlong to Span Conversion Calculator: Free Online Tool
Convert furlongs to spans with our free online length converter.
Furlong to Span Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Furlong).
- The converted value in Span will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Length category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Furlong to Span
Converting Furlong to Span involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Furlong = 880 spansExample Calculation:
Convert 10 furlongs: 10 × 880 = 8800 spans
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Furlong and a Span?
The Furlong (symbol fur) is a unit of length in the imperial and U.S. customary systems of measurement. It is defined as exactly one-eighth of a mile (1/8 mi). This is equivalent to 220 yards (yd), 660 feet (ft), or precisely 201.168 meters (m).
The Span is an ancient unit of length based on the distance across an outstretched human hand, measured from the tip of the thumb to the tip of the little finger (or sometimes the index finger). As an anthropomorphic unit, its length was inherently variable, depending on the size of an individual's hand.
Historically, it was often defined in relation to other body-based units:
- Typically considered half a cubit.
- Often equated to 3 palms (where a palm is the width of the hand across the base of the fingers).
- Sometimes defined as 12 digits (fingerbreadths).
A common, though unofficial, modern estimate for a span is around 9 inches or approximately 22.86 centimeters (cm).
Note: The Furlong is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Span belongs to the imperial/US customary system.
History of the Furlong and Span
The name "furlong" derives from the Old English words furh (furrow) and lang (long). It originally represented the approximate distance a team of oxen could plow without rest within a typical English open field system. It also related to the traditional size of an acre, which was conceived as an area of land one furlong long and one chain (66 feet) wide. The furlong was standardized as 40 rods (a rod being 5.5 yards) or 10 chains. While historically significant in agriculture and land surveying, its use has greatly diminished with the adoption of metric units and the decline of the imperial system for general measurements.
The span is one of the oldest informal units of measurement, used by numerous ancient civilizations, including the Egyptians, Israelites, Greeks, and Romans, due to the convenience of using the human hand.
- Ancient Egypt & Mesopotamia: The span was used alongside the cubit and digit. The relationship (often 1 span = 1/2 cubit) was fundamental in their systems.
- Biblical References: The span is mentioned in the Bible (e.g., Exodus 28:16 describing the High Priest's breastplate, Goliath's height in some interpretations).
- Ancient Greece & Rome: Used as a practical subdivision of the cubit.
- Medieval Europe: Continued in informal use and sometimes appeared in texts defining lengths. In England, it was often standardized (unofficially) as 9 inches.
Like other anthropomorphic units, the span fell out of official use with the development and adoption of more standardized systems like the Imperial (inches, feet) and Metric (meters) systems, which provided necessary precision for trade, science, and industry.
Common Uses for furlongs and spans
Explore the typical applications for both Furlong (imperial/US) and Span (imperial/US) to understand their common contexts.
Common Uses for furlongs
Although largely obsolete for general use, the furlong persists in specific contexts:
- Horse Racing: Its most prominent modern use is in measuring race distances in countries like the United Kingdom, Ireland, the United States, and Canada. Race lengths are frequently given in furlongs (e.g., a 6-furlong sprint).
- Historical Context: Encountered in historical documents, land deeds, and literature referring to land measurement or travel distances in imperial units.
- Figurative Language: Occasionally used informally or figuratively to denote a distance, though this is rare.
- Myanmar (Burma): The furlong remains in common use in Myanmar as a customary unit alongside the mile.
Common Uses for spans
The span is now obsolete for precise or official measurements but is still encountered or used in specific contexts:
- Informal Estimation: Used for quick, rough measurements of moderate lengths where precision is not critical (e.g., gardening, crafts, estimating object sizes).
- Historical Texts: Found in ancient and medieval documents, requiring understanding for interpretation.
- Anthropology & Archaeology: Relevant when studying historical measurement systems or interpreting dimensions from ancient sites.
- Figurative Language: Can be used metaphorically to denote a small distance or extent ("life span").
- Understanding Historical Units: Key to grasping the relationship between units like the digit, palm, and cubit in ancient systems.
Frequently Asked Questions
Questions About Furlong (fur)
How many furlongs are in a mile?
There are exactly 8 furlongs in 1 mile.
How many yards/feet/meters are in a furlong?
One furlong is equal to:
- 220 yards (yd)
- 660 feet (ft)
- 201.168 meters (m) (exactly)
Where is the furlong used most often today?
Its primary modern application is in horse racing in several English-speaking countries (UK, Ireland, USA, Canada), where it is the standard unit for race distances. It also sees some continued customary use in Myanmar.
Is the furlong an SI unit?
No, the furlong is not part of the International System of Units (SI). It belongs to the imperial and U.S. customary systems. The corresponding SI unit for length is the meter (m).
Why is it called a furlong?
The name comes from Old English furlang, meaning "furrow long," reflecting its origin as the length of a furrow a team of oxen could plow in an acre strip before needing rest.
About Span (span)
How long is a span?
There is no single, universally fixed length for a span because it's based on human hand size. However:
- A common historical and modern estimate is 9 inches (in).
- This is approximately 22.86 centimeters (cm) or 0.2286 meters (m).
- Historically, it was often defined as half a cubit, which varied (e.g., a common cubit of ~18 inches would yield a 9-inch span).
What is the relationship between a span and a cubit?
In many historical systems, a span was considered half (1/2) of a cubit. Since cubits themselves varied (e.g., common cubit vs. royal cubit), the exact length of the span derived this way also varied.
What is the relationship between a span and a palm or digit?
Common relationships, though varying by system, were:
- 1 span ≈ 3 palms (where a palm is the width of the hand).
- 1 span ≈ 12 digits (where a digit is the width of a finger).
Is the span an SI unit?
No, the span is not an SI unit. It is an ancient, non-standardized, anthropomorphic unit. The SI base unit for length is the meter (m).
Is the span still used today?
The span is not used for any official, scientific, or commercial measurements. Its use is limited to informal estimations, historical context, and figurative language. People might still use their own hand span for a quick size check.
Where does the name 'span' come from?
The word "span" comes from Old English spann, related to the verb spannan, meaning "to stretch, extend, or connect". This directly reflects the action of stretching the hand to measure the unit.
Conversion Table: Furlong to Span
| Furlong (fur) | Span (span) |
|---|---|
| 1 | 880 |
| 5 | 4,400 |
| 10 | 8,800 |
| 25 | 22,000 |
| 50 | 44,000 |
| 100 | 88,000 |
| 500 | 440,000 |
| 1,000 | 880,000 |
All Length Conversions
Other Units from Length
- Meter (m)
- Kilometer (km)
- Hectometer (hm)
- Decimeter (dm)
- Centimeter (cm)
- Millimeter (mm)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
- Nautical Mile (NM)
- Micrometer (μm)
- Nanometer (nm)
- Light Year (ly)
- Astronomical Unit (AU)
- Parsec (pc)
- Angstrom (Å)
- Point (Typography) (pt)
- Mil/Thou (mil)
- Fathom (fath)
- Link (Gunter's) (li)
- Pace (pace)
- Digit (digit)
- Cable Length (cb)
- Ell (ell)
- Finger (finger)
- Roman Mile (m.p.)
- Stadion (stadion)
- Chi (Chinese) (chi)
- Shaku (Japanese) (shaku)
- Li (Chinese) (li)
- Toise (toise)
- Bolt (bolt)
- Rope (rope)
- Smoot (smoot)
- Sajene (sajene)
- Ken (ken)
- Wa (wa)
- Vara (vara)
- Aln (aln)
- Cubit (Royal/Egyptian) (cubit)
- Versta (versta)
- Arpent (arpent)
- Ri (Japanese) (ri)
- Klafter (klafter)
- Yojana (yojana)
- Skein (skein)