Aln to Smoot Conversion Calculator: Free Online Tool
Convert alnar to smoots with our free online length converter.
Aln to Smoot Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Aln).
- The converted value in Smoot 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 Aln to Smoot
Converting Aln to Smoot involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Aln = 0.349042 smootsExample Calculation:
Convert 10 alnar: 10 × 0.349042 = 3.490422 smoots
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 Aln and a Smoot?
The Aln (Swedish), Alen (Danish and Norwegian) was a traditional Scandinavian unit of length, analogous to the English ell or cubit. Its length varied significantly by region and time but was generally based on the length of the forearm.
Key standardized or common values include:
- Swedish Aln: Officially standardized (as the Rydaholmsaln) in 1665 and confirmed in 1735 as exactly 2 Swedish fot (feet). This equates to approximately 0.5938 meters (or 59.38 cm / 23.38 inches).
- Danish Alen: The common standard (Sjællandsk alen) was 2 Danish fod (feet), equating to approximately 0.6277 meters (or 62.77 cm / 24.71 inches).
- Norwegian Alen: Often followed the Danish standard due to political union. After 1824, it was legally defined as 2 Norwegian fot, equating to 0.6275 meters (or 62.75 cm / 24.70 inches), very close to the Danish value.
The Aln/Alen was typically subdivided into 4 kvarter (quarters).
The Smoot is a non-standard, humorous unit of length created as part of an MIT fraternity prank in October 1958. It is defined by the height of Oliver R. Smoot (MIT class of 1962) at the time of the prank, which was 5 feet 7 inches.
This equates to:
- 67 inches (in)
- 1.7018 meters (m)
- Approximately 1.86 yards (yd)
Unlike standardized units, the Smoot is intrinsically tied to a specific individual's height at a particular moment and serves primarily as a cultural artifact and inside joke, particularly within the MIT community.
Note: The Aln is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Smoot belongs to the imperial/US customary system.
History of the Aln and Smoot
The Aln/Alen originates from the Proto-Germanic word for forearm (alinō), reflecting its basis as an anthropomorphic unit, similar to the cubit in other cultures. For centuries, its length was inconsistent, varying between regions, cities, and trades within Sweden, Denmark, and Norway.
- Early Variations: Numerous local standards existed, often based on physical rods kept by authorities or guilds.
- Standardization Efforts:
- Sweden: Attempts at standardization culminated in the adoption of the Rydaholmsaln (based on a specific iron standard bar from Rydaholm church) in 1665, defined as 2 fot. This standard (≈0.5938 m) became mandatory nationwide in 1735.
- Denmark & Norway: The Sjællandsk alen (Zealand ell, ≈0.6277 m) became the dominant standard in Denmark and, consequently, in Norway during their union. Norway later formally adopted a slightly different value (≈0.6275 m) based on its own fot definition in 1824.
- Metrication: The Aln/Alen was officially replaced by the metric system during the 19th and early 20th centuries: Norway in 1875, Sweden in 1889, and Denmark in 1907.
The Smoot unit originated in October 1958 during the pledge activities of the Lambda Chi Alpha fraternity at MIT. Pledges were tasked with measuring the length of the Harvard Bridge, which connects Boston and Cambridge, Massachusetts, over the Charles River.
Instead of using conventional measuring tools, the fraternity members decided to use one of their pledges, Oliver Smoot, as the unit of measure. They repeatedly laid him down end-to-end across the bridge, marking off increments in paint. His companions carried him or helped him move for each new measurement.
The final measurement determined the bridge's length to be 364.4 Smoots "plus or minus one ear". The "ear" indicated the uncertainty of the measurement, adding to the absurdity and humor of the event.
The painted markings on the bridge became a local landmark. They have been maintained and periodically repainted over the decades, often unofficially by members of the fraternity or other MIT affiliates. The Cambridge Police Department traditionally tolerates the markings because, among other reasons, they serve as useful reference points for identifying locations along the bridge.
Interestingly, Oliver R. Smoot later became a prominent figure in standards organizations, serving as Chairman of the American National Standards Institute (ANSI) and President of the International Organization for Standardization (ISO), an ironic twist given his namesake unit's non-standard nature.
Common Uses for alnar and smoots
Explore the typical applications for both Aln (imperial/US) and Smoot (imperial/US) to understand their common contexts.
Common Uses for alnar
Historically, the Aln/Alen was a fundamental unit for everyday trade and craft:
- Textiles: Its most prominent use was measuring cloth (wool, linen, silk). Standardization was often driven by the textile trade.
- Timber and Lumber: Measuring lengths of wood.
- Rope and Cordage: Measuring lengths of rope.
- Construction: Used in building measurements, though perhaps less formally than in trade.
- General Trade: Measuring various goods sold by length.
It was less commonly used for land surveying, where units like the stång (rod) or mil (mile) were preferred.
Common Uses for smoots
The Smoot is not used for any official, scientific, or commercial measurements. Its use is primarily cultural and humorous:
- Harvard Bridge Markings: The painted markings on the bridge sidewalk are its most famous application, indicating distance in Smoots from the Boston side. They are a well-known local landmark.
- MIT Culture and Slang: Used humorously within the MIT community and sometimes in the broader Boston area as a quirky local reference.
- Digital Recognition: The unit gained wider recognition when it was included as a unit of measurement in Google Calculator and Google Earth's ruler tool.
- Popular Culture: Occasionally referenced in media or tech circles as an example of a non-standard or humorous unit.
Frequently Asked Questions
Questions About Aln (aln)
How long is an Aln/Alen?
There isn't one single value, as it depended on the country and era. The main official standards were:
- Swedish Aln: ~0.594 meters / ~23.4 inches
- Danish Alen: ~0.628 meters / ~24.7 inches
- Norwegian Alen: ~0.628 meters / ~24.7 inches (very close to Danish)
Always consider the context (Swedish, Danish, or Norwegian) when encountering this unit in historical documents.
What's the difference between the Aln in different countries?
The primary difference was length:
- The Swedish Aln (≈59.4 cm) was noticeably shorter than the Danish and Norwegian Alen (both ≈62.8 cm).
- All were typically defined as 2 local fot (feet), but the length of the fot itself varied between the countries.
Is the Aln related to the English Ell?
Yes, both the Aln/Alen and the English Ell are historical units of length derived from the concept of the cubit or forearm length (Latin ulna). However, their standardized lengths differed significantly. The most common English Ell was 45 inches (1.143 m), much longer than any standard Scandinavian Aln/Alen.
Is the Aln/Alen still used today?
No, the Aln/Alen is obsolete. It was officially replaced by the meter in Sweden, Denmark, and Norway during the metrication process in the late 19th and early 20th centuries. Its use today is purely historical.
Is the Aln an SI unit?
No, the Aln/Alen is not an SI unit. It is a traditional unit from the historical Scandinavian systems of measurement. The SI base unit for length is the meter (m).
About Smoot (smoot)
How long is a Smoot?
One Smoot is exactly the height of Oliver R. Smoot in 1958:
- 5 feet 7 inches
- 67 inches
- 1.7018 meters
Is the Smoot an official or standardized unit?
No, the Smoot is not an official or standardized unit of measurement in any system (Imperial, US customary, or SI). It is a non-standard, humorous unit originating from a specific event.
Why is the bridge measurement "plus or minus one ear"?
The "plus or minus one ear" (often written as ± εar) reflects the humorous imprecision of the original measurement method using a person. It signifies the margin of error in a whimsical way, possibly referencing the difficulty of the final partial measurement or simply adding to the prank's absurdity.
Are the Smoot markings still on the Harvard Bridge?
Yes, the markings are traditionally repainted periodically (often by Lambda Chi Alpha members) and are considered a fixture of the bridge. During bridge renovations in 2011, the Massachusetts Department of Transportation restored the markings, acknowledging their cultural significance.
How does the Smoot compare to standard units?
- 1 Smoot = 1.7018 meters
- 1 Meter ≈ 0.5876 Smoots
- 1 Smoot = 5.583 feet (5 feet 7 inches)
- 1 Foot ≈ 0.1791 Smoots
Is the Smoot an SI unit?
No, the Smoot is not an SI unit. It is a non-standard, informal unit. The SI base unit for length is the meter (m).
What did Oliver Smoot think of the unit?
Oliver Smoot generally embraced his namesake unit with good humor throughout his life and career, often participating in events related to it at MIT.
Conversion Table: Aln to Smoot
| Aln (aln) | Smoot (smoot) |
|---|---|
| 1 | 0.349 |
| 5 | 1.745 |
| 10 | 3.49 |
| 25 | 8.726 |
| 50 | 17.452 |
| 100 | 34.904 |
| 500 | 174.521 |
| 1,000 | 349.042 |
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)
- Furlong (fur)
- Link (Gunter's) (li)
- Pace (pace)
- Span (span)
- 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)
- Sajene (sajene)
- Ken (ken)
- Wa (wa)
- Vara (vara)
- Cubit (Royal/Egyptian) (cubit)
- Versta (versta)
- Arpent (arpent)
- Ri (Japanese) (ri)
- Klafter (klafter)
- Yojana (yojana)
- Skein (skein)