Convert Kiloparsec to Centimeter
Convert kiloparsecs to centimeters instantly. 1 kiloparsec = 3.085678e+21 centimeter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Centimeter to Kiloparsec converter for the reverse conversion.
Units explained
Kiloparsec
A kiloparsec is a distance unit equal to 1,000 parsecs (about 3.09×10¹⁹ m). It is used to express galactic-scale distances.
Combines the metric-style prefix kilo- with the parsec. Standardised in astronomy as the natural unit for distances within and between galaxies.
Kiloparsecs are used to express galactic radii (the Milky Way is roughly 8 kpc from center to Sun), galactic-cluster scales, and distances within the Local Group.
Exact via the parsec; standardised by IAU 2015 along with parsec.
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.
Kiloparsec to Centimeter conversion formula
The relationship between kiloparsecs and centimeters:
To convert kiloparsecs to centimeters, multiply the value in kiloparsecs by 3.085678e+21. To reverse, multiply centimeters by 3.240779e-22.
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 Kiloparsec converter for the reverse direction.
Step-by-step: convert kiloparsecs to centimeters
- Write down the value in kiloparsecs (kpc).
- Multiply that value by the factor 3.085678e+21.
- The product is the equivalent value in centimeters (cm).
- To reverse, multiply the centimeter value by 3.240779e-22.
Worked examples
Example 1 — Convert 1 kpc to cm:
1 × 3.085678e+21 = 3.085678e+21 cm
Example 2 — Convert 100 kpc to cm:
100 × 3.085678e+21 = 3.085678e+23 cm
Kiloparsec to Centimeter conversion table
Standard reference values for converting kiloparsecs to centimeters:
| Kiloparsec [kpc] | Centimeter [cm] |
|---|---|
| 0.01 | 3.085678e+19 |
| 0.1 | 3.085678e+20 |
| 1 | 3.085678e+21 |
| 2 | 6.171355e+21 |
| 3 | 9.257033e+21 |
| 4 | 1.234271e+22 |
| 5 | 1.542839e+22 |
| 10 | 3.085678e+22 |
| 20 | 6.171355e+22 |
| 30 | 9.257033e+22 |
| 40 | 1.234271e+23 |
| 50 | 1.542839e+23 |
| 100 | 3.085678e+23 |
| 500 | 1.542839e+24 |
| 1000 | 3.085678e+24 |
Frequently asked questions
How many centimeters is 1 kiloparsec?
How do I convert kiloparsecs to centimeters?
How do I convert centimeters back to kiloparsecs?
How many centimeters is 100 kiloparsecs?
Popular length unit conversions
Convert Kiloparsec to other length units
Show all Kiloparsec conversions
Metric / SI (4 units)
Imperial / US Customary (4 units)
Astronomical (8 units)
Sources & references
Conversion factor (1 kpc = 3.085678e+21 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.