Convert Earth's Equatorial Radius to Yard
Convert earth's equatorial radii to yards instantly. 1 earth's equatorial radius = 6975215.4418197731 yard — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Yard to Earth's Equatorial Radius converter for the reverse conversion.
Units explained
Earth's Equatorial Radius
Earth's equatorial radius is the distance from the planet's center to its surface at the equator, defined as exactly 6,378,137 meters by the WGS84 geodetic reference system.
The WGS84 (World Geodetic System 1984) defines Earth's reference ellipsoid for use in GPS and global cartography. The 6,378,137 m equatorial value was determined through satellite and ground geodetic measurements consolidated in 1984.
WGS84's equatorial radius is the standard reference for GPS, satellite imagery, geographic information systems, and aviation navigation. It defines the 'a' parameter of Earth's reference ellipsoid in coordinate transformations.
WGS84 reference ellipsoid adopted in 1984 by the US Department of Defense; subsequently adopted globally for GPS and civilian geodesy.
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 Equatorial Radius to Yard conversion formula
The relationship between earth's equatorial radii and yards:
To convert earth's equatorial radii to yards, multiply the value in earth's equatorial radii by 6975215.4418197731. To reverse, multiply yards by 1.433647e-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 Equatorial Radius converter for the reverse direction.
Step-by-step: convert earth's equatorial radii to yards
- Write down the value in earth's equatorial radii (R⊕,eq).
- Multiply that value by the factor 6975215.4418197731.
- The product is the equivalent value in yards (yd).
- To reverse, multiply the yard value by 1.433647e-7.
Worked examples
Example 1 — Convert 1 R⊕,eq to yd:
1 × 6975215.4418197731 = 6975215.4418197731 yd
Example 2 — Convert 100 R⊕,eq to yd:
100 × 6975215.4418197731 = 6.975215e+8 yd
Earth's Equatorial Radius to Yard conversion table
Standard reference values for converting earth's equatorial radii to yards:
| Earth's Equatorial Radius [R⊕,eq] | Yard [yd] |
|---|---|
| 0.01 | 69752.1544181977 |
| 0.1 | 697521.5441819774 |
| 1 | 6975215.4418197731 |
| 2 | 1.395043e+7 |
| 3 | 2.092565e+7 |
| 4 | 2.790086e+7 |
| 5 | 3.487608e+7 |
| 10 | 6.975215e+7 |
| 20 | 1.395043e+8 |
| 30 | 2.092565e+8 |
| 40 | 2.790086e+8 |
| 50 | 3.487608e+8 |
| 100 | 6.975215e+8 |
| 500 | 3.487608e+9 |
| 1000 | 6.975215e+9 |
Frequently asked questions
How many yards is 1 earth's equatorial radius?
How do I convert earth's equatorial radii to yards?
How do I convert yards back to earth's equatorial radii?
How many yards is 100 earth's equatorial radii?
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 R⊕,eq = 6975215.4418197731 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.