Convert Kiloparsec to Earth's Polar Radius
Convert kiloparsecs to earth's polar radii instantly. 1 kiloparsec = 4.854173e+12 earth's polar radius — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Earth's Polar Radius to Kiloparsec converter for the reverse conversion.
Units explained
Kiloparsec
A kiloparsec is a distance unit equal to 1,000 parsecs (about 3.09×10¹⁹ m). It is used to express galactic-scale distances.
Combines the metric-style prefix kilo- with the parsec. Standardised in astronomy as the natural unit for distances within and between galaxies.
Kiloparsecs are used to express galactic radii (the Milky Way is roughly 8 kpc from center to Sun), galactic-cluster scales, and distances within the Local Group.
Exact via the parsec; standardised by IAU 2015 along with parsec.
Earth's Polar Radius
Earth's polar radius is the distance from the planet's center to either pole, approximately 6,356,752 meters under the WGS84 geodetic reference system. The polar radius is about 21 km shorter than the equatorial radius due to Earth's oblate spheroid shape.
Derived from WGS84's flattening parameter (f ≈ 1/298.257); the difference from the equatorial radius is the geometric signature of Earth's rotational oblateness.
Earth's polar radius is used in geodesy, satellite-orbit calculations, and global cartography. Together with the equatorial radius it defines Earth's reference ellipsoid in WGS84.
Derived from the WGS84 reference ellipsoid adopted in 1984; the value is computed from the equatorial radius minus the oblateness.
Kiloparsec to Earth's Polar Radius conversion formula
The relationship between kiloparsecs and earth's polar radii:
To convert kiloparsecs to earth's polar radii, multiply the value in kiloparsecs by 4.854173e+12. To reverse, multiply earth's polar radii by 2.060083e-13.
How to use this converter
Type a value into the calculator. The result in earth's polar radii updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Earth's Polar Radius to Kiloparsec converter for the reverse direction.
Step-by-step: convert kiloparsecs to earth's polar radii
- Write down the value in kiloparsecs (kpc).
- Multiply that value by the factor 4.854173e+12.
- The product is the equivalent value in earth's polar radii (R⊕,p).
- To reverse, multiply the earth's polar radius value by 2.060083e-13.
Worked examples
Example 1 — Convert 1 kpc to R⊕,p:
1 × 4.854173e+12 = 4.854173e+12 R⊕,p
Example 2 — Convert 100 kpc to R⊕,p:
100 × 4.854173e+12 = 4.854173e+14 R⊕,p
Kiloparsec to Earth's Polar Radius conversion table
Standard reference values for converting kiloparsecs to earth's polar radii:
| Kiloparsec [kpc] | Earth's Polar Radius [R⊕,p] |
|---|---|
| 0.01 | 4.854173e+10 |
| 0.1 | 4.854173e+11 |
| 1 | 4.854173e+12 |
| 2 | 9.708347e+12 |
| 3 | 1.456252e+13 |
| 4 | 1.941669e+13 |
| 5 | 2.427087e+13 |
| 10 | 4.854173e+13 |
| 20 | 9.708347e+13 |
| 30 | 1.456252e+14 |
| 40 | 1.941669e+14 |
| 50 | 2.427087e+14 |
| 100 | 4.854173e+14 |
| 500 | 2.427087e+15 |
| 1000 | 4.854173e+15 |
Frequently asked questions
How many earth's polar radii is 1 kiloparsec?
How do I convert kiloparsecs to earth's polar radii?
How do I convert earth's polar radii back to kiloparsecs?
How many earth's polar radii is 100 kiloparsecs?
Popular length unit conversions
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Metric / SI (4 units)
Imperial / US Customary (4 units)
Astronomical (8 units)
Sources & references
Conversion factor (1 kpc = 4.854173e+12 R⊕,p) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.