21 Centimeters to Astronomical Units

Convert 21 centimeters (cm) to astronomical units (AU) with formulas, examples, and conversion tables.

cm
AU
21 cm = 1.4037e-12 AU
Full precision:1.4037e-12 AU
Feet + Inches:27' 1.5"
Step-by-Step Solution

To convert 21 centimeters to astronomical units, we divide by 1.496e+13 because one astronomical unit equals exactly 1.496e+13 centimeters.

1 astronomical unit = 1.496e+13 centimeters

Since there are 1.496e+13 centimeters in every astronomical unit, we divide our value by this factor:

21 ÷ 1.496e+13 = 1.4037e-12 astronomical units

So 21 centimeters = 1.4037e-12 astronomical units.

Quick check: 1.4037e-12 × 1.496e+13 = 21 centimeters

Centimeters to Astronomical Units Conversion Table

CentimetersAstronomical Units
1 cm6.6845e-14 AU
2 cm1.3369e-13 AU
3 cm2.0053e-13 AU
4 cm2.6738e-13 AU
5 cm3.3422e-13 AU
10 cm6.6845e-13 AU
20 cm1.3369e-12 AU
21 cm1.4037e-12 AU
50 cm3.3422e-12 AU
100 cm6.6845e-12 AU

21 Centimeters in Other Units

Unit21 cm =
Centimeters to Kilometers0.00021 km
CM to Meters0.21 m
CM to MM210 mm
Centimeters to Micrometers210000 μm
Centimeters to Nanometers210000000 nm
Centimeters to Miles0.00013049 mi
Centimeters to Yards0.22966 yd
Centimeters to Feet0.68898 ft
CM to Inches8.2677 in
Centimeters to Nautical Miles0.00011339 nmi
Centimeters to Fathoms0.11483 ftm
Centimeters to Light Years2.2196e-17 ly
Centimeters to Astronomical Units1.4037e-12 AU
Centimeters to Parsecs6.8049e-18 pc
Centimeters to Angstroms2100000000 Å
Centimeters to Planck Lengths1.2993e+34 ℓP
Centimeters to Rods0.041756 rd

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