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Convert Megameter (Mm) to Astronomical Unit (AU) instantly.

Megameter to Astronomical Unit conversion

1 Megameter (Mm) = 0.0000066845871 Astronomical Unit (AU). To convert Megameter to Astronomical Unit, multiply the value by 0.0000066845871.

Megameter (Mm)Astronomical Unit (AU)
10.0000066845871
20.000013369174
50.000033422936
100.000066845871
250.00016711468
500.00033422936
1000.00066845871
10000.0066845871

Frequently asked questions

How many Astronomical Unit are in one Megameter?

One Megameter (Mm) equals 0.0000066845871 Astronomical Unit (AU).

How do I convert Megameter to Astronomical Unit?

To convert Megameter to Astronomical Unit, multiply the value by 0.0000066845871.

What is 10 Megameter in Astronomical Unit?

10 Megameter = 0.000066845871 Astronomical Unit.

About these units

Megameter (Mm)

The megameter, measuring one million meters (1,000 kilometers), is useful for describing large geographical or geophysical distances on planetary scales. Earth's radius (approximately 6.37 Mm) and the thickness of atmospheric layers can be expressed effectively in megameters. This unit provides a clean and compact way to represent massive distances without resorting to scientific notation. The megameter also appears in discussions of communication signals, satellite orbits, and especially planetary science. While kilometers are still more common in public-facing contexts, megameters offer a more mathematically elegant representation for large calculations. They provide a middle ground between human-scale geography and astronomical units.

Astronomical Unit (AU)

The astronomical unit (AU) is one of the most important distance units in astronomy and planetary science. Defined as exactly 149,597,870,700 meters, it represents the average distance between Earth and the Sun. Early astronomers could estimate the AU only indirectly through geometric and observational methods; modern techniques such as radar ranging and spacecraft telemetry have vastly improved its precision. The AU serves as a natural and intuitive scale for describing distances within the solar system. Planetary orbits, asteroid trajectories, comet paths, and interplanetary mission distances are often expressed in astronomical units because they avoid cumbersome scientific notation. For instance, Jupiter orbits at about 5.2 AU from the Sun, while the asteroid belt lies roughly between 2 and 3.3 AU. Beyond practical measurement, the AU forms part of a conceptual framework for understanding solar system layout. It appears in discussions of habitable zones, solar radiation intensity, and celestial mechanics. The unit's significance extends from education to high-level astrophysics, making it one of astronomy's cornerstone measurements.

More Megameter converters

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