Convert Earth's Equatorial Radius to Centimeter
Convert earth's equatorial radii to centimeters instantly. 1 earth's equatorial radius = 6.378137e+8 centimeter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Centimeter 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.
Centimeter
A centimeter is a metric unit of length equal to one hundredth of a meter (1/100 m). It is one of the most commonly used SI sub-units in daily life, especially for measuring small objects, body dimensions, paper sizes, and short distances.
The centimeter emerged from the French metric system established by the French Academy of Sciences in 1793. The metric system introduced decimal-based prefixes (milli-, centi-, deci-, deca-, hecto-, kilo-) to create proportional sub-units of the meter.
Centimeters are the standard unit for everyday measurement in nearly every country outside the United States. They are used for body height, clothing sizes, rainfall, paper formats (A4 is 21 × 29.7 cm), screen dimensions, and most consumer product specifications.
Developed in France during the late 18th century as part of the metric system designed by the French Academy of Sciences. Formally adopted in France in 1795 and ratified internationally through the Metre Convention signed in Paris in 1875.
Earth's Equatorial Radius to Centimeter conversion formula
The relationship between earth's equatorial radii and centimeters:
To convert earth's equatorial radii to centimeters, multiply the value in earth's equatorial radii by 6.378137e+8. To reverse, multiply centimeters by 1.567856e-9.
How to use this converter
Type a value into the calculator. The result in centimeters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Centimeter to Earth's Equatorial Radius converter for the reverse direction.
Step-by-step: convert earth's equatorial radii to centimeters
- Write down the value in earth's equatorial radii (R⊕,eq).
- Multiply that value by the factor 6.378137e+8.
- The product is the equivalent value in centimeters (cm).
- To reverse, multiply the centimeter value by 1.567856e-9.
Worked examples
Example 1 — Convert 1 R⊕,eq to cm:
1 × 6.378137e+8 = 6.378137e+8 cm
Example 2 — Convert 100 R⊕,eq to cm:
100 × 6.378137e+8 = 6.378137e+10 cm
Earth's Equatorial Radius to Centimeter conversion table
Standard reference values for converting earth's equatorial radii to centimeters:
| Earth's Equatorial Radius [R⊕,eq] | Centimeter [cm] |
|---|---|
| 0.01 | 6378137 |
| 0.1 | 6.378137e+7 |
| 1 | 6.378137e+8 |
| 2 | 1.275627e+9 |
| 3 | 1.913441e+9 |
| 4 | 2.551255e+9 |
| 5 | 3.189068e+9 |
| 10 | 6.378137e+9 |
| 20 | 1.275627e+10 |
| 30 | 1.913441e+10 |
| 40 | 2.551255e+10 |
| 50 | 3.189068e+10 |
| 100 | 6.378137e+10 |
| 500 | 3.189068e+11 |
| 1000 | 6.378137e+11 |
Frequently asked questions
How many centimeters is 1 earth's equatorial radius?
How do I convert earth's equatorial radii to centimeters?
How do I convert centimeters back to earth's equatorial radii?
How many centimeters is 100 earth's equatorial radii?
Popular length unit conversions
Convert Earth's Equatorial Radius to other length units
Show all Earth's Equatorial Radius conversions
Metric / SI (4 units)
Imperial / US Customary (4 units)
Astronomical (8 units)
Sources & references
Conversion factor (1 R⊕,eq = 6.378137e+8 cm) 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.