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Convert A.U. of Length (a.u.) to Ell (ell) instantly.

About these units

A.U. of Length (a.u.)

The atomic unit of length, also known as the Bohr radius unit in atomic units, is approximately 5.29177 × 10⁻¹¹ meters. It is defined as the radius of the lowest-energy orbital of the hydrogen atom, providing a natural scale for describing atomic and quantum mechanical systems. Atomic units were devised to simplify equations in quantum chemistry and atomic physics by normalizing fundamental constants such as electron charge, Planck's constant, and electron mass to 1. In this system, many equations become dimensionless and far easier to manipulate mathematically. The atomic unit of length is essential in molecular orbital calculations, quantum simulations, and the study of electron behavior in atoms and molecules. Its use reflects an approach to physics in which units are chosen to match the natural scales of the systems being studied.

Ell (ell)

The ell is a traditional European unit of length, varying between 45–70 cm depending on the region. It originated from the forearm or arm length and became standardized in many countries for measuring cloth and textiles. In commerce, the ell simplified transactions, allowing merchants to describe fabric lengths efficiently. In tailoring, it offered a consistent basis for cutting and patterning clothing. The unit was essential in guild systems, where precision and repeatability in textile production were critical. While largely obsolete today due to the metric system, the ell remains significant for historians, textile scholars, and anyone studying pre-modern European commerce and craft practices.

More A.U. of Length converters

A.U. of Length [a.u.] ↔ Meter [m]
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A.U. of Length [a.u.] ↔ Kilometer [km]
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A.U. of Length [a.u.] ↔ Centimeter [cm]
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A.U. of Length [a.u.] ↔ Millimeter [mm]
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A.U. of Length [a.u.] ↔ Mile [mi]
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A.U. of Length [a.u.] ↔ Foot [ft]
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A.U. of Length [a.u.] ↔ Inch [in]
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A.U. of Length [a.u.] ↔ Yard [yd]
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A.U. of Length [a.u.] ↔ Nautical Mile [nmi]
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A.U. of Length [a.u.] ↔ Micrometer [µm]
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A.U. of Length [a.u.] ↔ Attometer [am]
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A.U. of Length [a.u.] ↔ Femtometer [fm]
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A.U. of Length [a.u.] ↔ Picometer [pm]
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A.U. of Length [a.u.] ↔ Nanometer [nm]
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A.U. of Length [a.u.] ↔ Decimeter [dm]
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A.U. of Length [a.u.] ↔ Dekameter [dam]
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A.U. of Length [a.u.] ↔ Hectometer [hm]
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A.U. of Length [a.u.] ↔ Megameter [Mm]
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A.U. of Length [a.u.] ↔ Gigameter [Gm]
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A.U. of Length [a.u.] ↔ Terameter [Tm]
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A.U. of Length [a.u.] ↔ Petameter [Pm]
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A.U. of Length [a.u.] ↔ Exameter [Em]
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A.U. of Length [a.u.] ↔ Mil [mil]
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A.U. of Length [a.u.] ↔ Hand [hand]
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A.U. of Length [a.u.] ↔ Fathom [fath]
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A.U. of Length [a.u.] ↔ Rod [rd]
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A.U. of Length [a.u.] ↔ Chain [ch]
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A.U. of Length [a.u.] ↔ Furlong [fur]
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A.U. of Length [a.u.] ↔ League [lea]
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A.U. of Length [a.u.] ↔ Nautical Mile (UK) [NM (UK)]
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A.U. of Length [a.u.] ↔ Nautical League (Int) [nl (int)]
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A.U. of Length [a.u.] ↔ Nautical League (UK) [nl (UK)]
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A.U. of Length [a.u.] ↔ Astronomical Unit [AU]
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A.U. of Length [a.u.] ↔ Light Year [ly]
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A.U. of Length [a.u.] ↔ Parsec [pc]
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A.U. of Length [a.u.] ↔ Kiloparsec [kpc]
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A.U. of Length [a.u.] ↔ Megaparsec [Mpc]
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A.U. of Length [a.u.] ↔ Angstrom [Å]
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A.U. of Length [a.u.] ↔ X-unit [X]
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A.U. of Length [a.u.] ↔ Planck Length [ℓₚ]
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A.U. of Length [a.u.] ↔ Electron Radius [re]
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A.U. of Length [a.u.] ↔ Bohr Radius [a₀]
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A.U. of Length [a.u.] ↔ Point [pt]
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A.U. of Length [a.u.] ↔ Pica [pica]
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A.U. of Length [a.u.] ↔ Twip [twip]
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A.U. of Length [a.u.] ↔ Aln [aln]
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A.U. of Length [a.u.] ↔ Famn [famn]
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A.U. of Length [a.u.] ↔ Caliber [cl]
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A.U. of Length [a.u.] ↔ Centiinch [cin]
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A.U. of Length [a.u.] ↔ Ken [ken]
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A.U. of Length [a.u.] ↔ Russian Archin [archin]
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A.U. of Length [a.u.] ↔ Roman Actus [actus]
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A.U. of Length [a.u.] ↔ Vara de Tarea [vara de tarea]
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A.U. of Length [a.u.] ↔ Vara Conuquera [vara conuquera]
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A.U. of Length [a.u.] ↔ Vara Castellana [vara castellana]
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A.U. of Length [a.u.] ↔ Cubit (Greek) [cubit (greek)]
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A.U. of Length [a.u.] ↔ Long Reed [long reed]
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A.U. of Length [a.u.] ↔ Reed [reed]
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A.U. of Length [a.u.] ↔ Long Cubit [long cubit]
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A.U. of Length [a.u.] ↔ Handbreadth [handbreadth]
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A.U. of Length [a.u.] ↔ Fingerbreadth [fingerbreadth]
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A.U. of Length [a.u.] ↔ Ell [ell]
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A.U. of Length [a.u.] ↔ Cubit (UK) [cubit (uk)]
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A.U. of Length [a.u.] ↔ Span (Cloth) [span]
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A.U. of Length [a.u.] ↔ Finger (Cloth) [finger]
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A.U. of Length [a.u.] ↔ Nail (Cloth) [nail]
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A.U. of Length [a.u.] ↔ Barleycorn [barleycorn]
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A.U. of Length [a.u.] ↔ Microinch [µin]
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A.U. of Length [a.u.] ↔ Arpent [arpent]
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A.U. of Length [a.u.] ↔ Kiloyard [kyd]
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A.U. of Length [a.u.] ↔ Foot (US Survey) [ft (US)]
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A.U. of Length [a.u.] ↔ Inch (US Survey) [in (US)]
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A.U. of Length [a.u.] ↔ Chain (US Survey) [ch (US)]
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A.U. of Length [a.u.] ↔ Furlong (US Survey) [fur (US)]
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A.U. of Length [a.u.] ↔ Rod (US Survey) [rd (US)]
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A.U. of Length [a.u.] ↔ Fathom (US Survey) [fath (US)]
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A.U. of Length [a.u.] ↔ Mile (US Survey) [mi (US)]
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A.U. of Length [a.u.] ↔ League (Statute) [st.league]
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A.U. of Length [a.u.] ↔ Mile (Roman) [mi (Roman)]
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A.U. of Length [a.u.] ↔ Earth's Equatorial Radius [R⊕]
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A.U. of Length [a.u.] ↔ Earth's Polar Radius [R⊕ (p)]
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A.U. of Length [a.u.] ↔ Earth's Distance from Sun [AU (es)]
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A.U. of Length [a.u.] ↔ Sun's Radius [R☉]
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Convert A.U. of Length to Ell