Convert Meter to Earth's Polar Radius
Convert meters to earth's polar radii instantly. 1 meter = 1.57313e-7 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 Meter converter for the reverse conversion.
Units explained
Meter
The meter is the SI base unit of length. Since 2019, the meter has been defined by fixing the numerical value of the speed of light in vacuum to exactly 299,792,458 meters per second. Every other SI length unit derives from the meter.
The meter was originally defined in 1793 by the French Academy of Sciences as one ten-millionth of the distance from the equator to the North Pole along a meridian through Paris. It has been redefined multiple times — by physical prototype, then by atomic transitions, and finally in 2019 by fundamental physical constants.
The meter is the international standard for length in science, engineering, construction, athletics, and everyday measurement in metric countries. It underpins definitions of area (m²), volume (m³), and most derived SI units.
Established 1793 in France; ratified internationally via the Metre Convention 1875; redefined in 1960, 1983, and most recently 2019 when the SI redefinition fixed it to the speed of light.
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.
Meter to Earth's Polar Radius conversion formula
The relationship between meters and earth's polar radii:
To convert meters to earth's polar radii, multiply the value in meters by 1.57313e-7. To reverse, multiply earth's polar radii by 6356752.
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 Meter converter for the reverse direction.
Step-by-step: convert meters to earth's polar radii
- Write down the value in meters (m).
- Multiply that value by the factor 1.57313e-7.
- The product is the equivalent value in earth's polar radii (R⊕,p).
- To reverse, multiply the earth's polar radius value by 6356752.
Worked examples
Example 1 — Convert 1 m to R⊕,p:
1 × 1.57313e-7 = 1.57313e-7 R⊕,p
Example 2 — Convert 100 m to R⊕,p:
100 × 1.57313e-7 = 1.57313e-5 R⊕,p
Real-world example — Maritime depth conversion
A 10-meter sounding depth converts cleanly into earth's polar radii. Recreational divers and sailors translate between the two units whenever they read legacy charts against modern depth-sounder displays.
10 m × 1.57313e-7 = 1.57313e-6 R⊕,p
Real-world example — Reference scenario in case of fallback
Conversion between human-scale length units is the everyday workflow of architecture, athletics, and apparel design — three of the most common contexts that span metric and imperial systems.
1 m × 1.57313e-7 = 1.57313e-7 R⊕,p
Real-world example — Adult height conversion
A 1.8-meter-tall person measures a value in earth's polar radii that converts the height to the unit favoured by American forms, schools, or driver's licences. This is daily routine for anyone living between metric and imperial systems.
1.8 m × 1.57313e-7 = 2.831635e-7 R⊕,p
Meter to Earth's Polar Radius conversion table
Standard reference values for converting meters to earth's polar radii:
| Meter [m] | Earth's Polar Radius [R⊕,p] |
|---|---|
| 0.01 | 1.57313e-9 |
| 0.1 | 1.57313e-8 |
| 1 | 1.57313e-7 |
| 2 | 3.146261e-7 |
| 3 | 4.719391e-7 |
| 4 | 6.292522e-7 |
| 5 | 7.865652e-7 |
| 10 | 1.57313e-6 |
| 20 | 3.146261e-6 |
| 30 | 4.719391e-6 |
| 40 | 6.292522e-6 |
| 50 | 7.865652e-6 |
| 100 | 1.57313e-5 |
| 500 | 7.865652e-5 |
| 1000 | 0.000157313 |
Frequently asked questions
How many earth's polar radii is 1 meter?
How do I convert meters to earth's polar radii?
How do I convert earth's polar radii back to meters?
How many earth's polar radii is 100 meters?
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Sources & references
Conversion factor (1 m = 1.57313e-7 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.