Convert Earth's Polar Radius to Yard
Convert earth's polar radii to yards instantly. 1 earth's polar radius = 6951828.5214348203 yard — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Yard to Earth's Polar Radius converter for the reverse conversion.
Units explained
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.
Yard
A yard is an Imperial and US customary unit of length equal to 3 feet or exactly 0.9144 meters. It is used for medium distances, particularly in athletics and fabric/textile measurement.
The yard's origin is contested but traditionally attributed to the length from the tip of King Henry I's nose to the end of his outstretched thumb. It was standardized in English law from the medieval period and definitively fixed at 0.9144 m exactly by the 1959 International Yard and Pound Agreement.
Yards are used in American football (10 yards for a first down), golf course distances, fabric and carpet sales in the US, and short-distance running events. The UK uses yards informally and on road signs for short distances.
Standardized in English law from the Middle Ages; fixed at 0.9144 m exactly by the 1959 International Yard and Pound Agreement.
Earth's Polar Radius to Yard conversion formula
The relationship between earth's polar radii and yards:
To convert earth's polar radii to yards, multiply the value in earth's polar radii by 6951828.5214348203. To reverse, multiply yards by 1.43847e-7.
How to use this converter
Type a value into the calculator. The result in yards updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Yard to Earth's Polar Radius converter for the reverse direction.
Step-by-step: convert earth's polar radii to yards
- Write down the value in earth's polar radii (R⊕,p).
- Multiply that value by the factor 6951828.5214348203.
- The product is the equivalent value in yards (yd).
- To reverse, multiply the yard value by 1.43847e-7.
Worked examples
Example 1 — Convert 1 R⊕,p to yd:
1 × 6951828.5214348203 = 6951828.5214348203 yd
Example 2 — Convert 100 R⊕,p to yd:
100 × 6951828.5214348203 = 6.951829e+8 yd
Earth's Polar Radius to Yard conversion table
Standard reference values for converting earth's polar radii to yards:
| Earth's Polar Radius [R⊕,p] | Yard [yd] |
|---|---|
| 0.01 | 69518.2852143482 |
| 0.1 | 695182.8521434821 |
| 1 | 6951828.5214348203 |
| 2 | 1.390366e+7 |
| 3 | 2.085549e+7 |
| 4 | 2.780731e+7 |
| 5 | 3.475914e+7 |
| 10 | 6.951829e+7 |
| 20 | 1.390366e+8 |
| 30 | 2.085549e+8 |
| 40 | 2.780731e+8 |
| 50 | 3.475914e+8 |
| 100 | 6.951829e+8 |
| 500 | 3.475914e+9 |
| 1000 | 6.951829e+9 |
Frequently asked questions
How many yards is 1 earth's polar radius?
How do I convert earth's polar radii to yards?
How do I convert yards back to earth's polar radii?
How many yards is 100 earth's polar radii?
Popular length unit conversions
Convert Earth's Polar Radius to other length units
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Metric / SI (4 units)
Imperial / US Customary (4 units)
Astronomical (8 units)
Sources & references
Conversion factor (1 R⊕,p = 6951828.5214348203 yd) 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.