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To convert Earth radii to meters: multiply by 6,378,137.
R⊕(eq) = 6,378,137 m = 6,378.137 km. Earth's oblateness = (R_eq − R_pol)/R_eq ≈ 1/298.257.
For example, 1 Earth's Equatorial Radius (R⊕ (eq)) = 6975215.442 Yard (yd).
| Earth's Equatorial Radius (R⊕ (eq)) | Yard (yd) |
|---|---|
| 0.1 | 697521.5442 |
| 0.5 | 3487607.721 |
| 1 | 6975215.442 |
| 2 | 13950430.88 |
| 5 | 34876077.21 |
| 10 | 69752154.42 |
| 25 | 174380386 |
| 50 | 348760772.1 |
| 100 | 697521544.2 |
| 500 | 3487607721 |
| 1000 | 6975215442 |
The Earth's equatorial radius is the distance from Earth's center to the equator, approximately 6,378.137 km.
R⊕(eq) = 6,378,137 m = 6,378.137 km. Earth's oblateness = (R_eq − R_pol)/R_eq ≈ 1/298.257.
To convert Earth radii to meters: multiply by 6,378,137.
GPS calculations, satellite orbit determination, map projections, and geophysical modeling.
Earth is not a perfect sphere — the equatorial radius is about 21 km (0.3%) larger than the polar radius due to rotational flattening.
Using the equatorial radius as if Earth were a sphere — for precision, you must account for the oblate spheroid shape.
Earth's equatorial radius (6,378 km) vs. polar radius (6,357 km) shows the planet bulges at the equator due to spinning.
The yard is a unit of length equal to 3 feet or 36 inches, exactly 0.9144 meters.
1 yd = 3 ft = 36 in = 0.9144 m. There are 1,760 yards in one mile.
To convert yards to meters: multiply by 0.9144. To convert meters to yards: multiply by 1.09361.
American football (100-yard field), fabric purchasing (sold by the yard), golf (distance markers), and landscaping.
An American football field is exactly 100 yards (91.44 m) long. A yard is only about 9% shorter than a meter.
Assuming a yard equals a meter — a yard is about 91 cm, not 100 cm. Close but not identical.
A yard is roughly one big step. It's 3 feet, and a meter is about 3.28 feet — very close but not the same.



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