A parsec is about 3.26156 light-years.
Parsecs to Exameters Converter — pc to Em
Convert Parsec (pc) to Exameter (Em) using the exact conversion factor (1 parsec = 0.0308567758 exameter). See the formula, worked examples, conversion table, history, and common uses.
Parsecs to Exameters converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
Exameter is 1000000000000000000 meter units.
Result = input x 3.08567758e+16 / 1e+18.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Parsecs to Exameters
Parsec and Exameter both measure length. Parsec is most often used for measuring distances to nearby stars via parallax.
Formula
exameters = parsecs × 0.0308567758149
This factor comes from each unit's defined relationship to the category's base unit: 1 parsec equals 3.085678e+16 base units, and 1 exameter equals 1e+18 base units, so dividing one by the other gives the direct parsec-to-exameter factor of 0.0308567758149.
Simple example
1 pc × 0.03085677581 = 0.0308567758 Em
1 parsec = 0.0308567758 exameters.
Real-world example
10 pc × 0.03085677581 = 0.3085677581 Em
10 parsecs = 0.3085677581 exameters.
Conversion table
| Parsec (pc) | Exameter (Em) |
|---|---|
| 1 pc | 0.0308567758 Em |
| 5 pc | 0.1542838791 Em |
| 10 pc | 0.3085677581 Em |
| 21.0975 pc | 0.6510008278 Em |
| 42.195 pc | 1.302001656 Em |
| 100 pc | 3.085677581 Em |
Reverse conversion: Exameter to Parsec
0.0308567758 Em × 32.40779289 = 0.9999999995 pc
0.0308567758 exameters = 0.9999999995 parsecs.
parsecs = exameters × 32.4077928944
For a page dedicated to this direction, see Exameter to Parsec.
Understanding the Parsec
Parsec (pc) measures astronomical distance. The distance at which one astronomical unit subtends an angle of one arcsecond — approximately 3.26 light-years, or about 3.086 × 10¹⁶ meters. It is classified as a non-SI unit used in astronomy.
Where it's used: Standard distance unit throughout professional astronomy worldwide
Uses of the Parsec today
- Measuring distances to nearby stars via parallax
- Galactic and extragalactic distance scales in astrophysics research
History of the Parsec
The name is a portmanteau of 'parallax' and 'arcsecond,' reflecting how the unit is defined directly from the parallax method astronomers use to measure stellar distances: the tiny apparent shift in a nearby star's position as Earth orbits the Sun.
Historical origin. Parsec was not the invention of a single named person; it developed through the process described above.
Understanding the Exameter (Em)
Exameter is 1000000000000000000 meter units.
Parsec — sources
- IAU (International Astronomical Union) — parsec definition — Standard astronomical definition of the parsec via stellar parallax.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many exameters are in 1 parsec?
1 parsec equals 0.0308567758 exameters, using the exact defined conversion factor rather than an estimate.
How do I convert parsec to exameter?
Multiply the parsec value by 0.03085677581. The converter above does this instantly to whatever precision you set.
How do I convert exameter back to parsec?
Use the reverse factor: 1 exameter equals 32.40779289 parsecs. You can also use the swap control in the converter above to flip the direction instantly.
What is a parsec?
Parsec (pc) measures astronomical distance. The distance at which one astronomical unit subtends an angle of one arcsecond — approximately 3.26 light-years, or about 3.086 × 10¹⁶ meters. It is classified as a non-SI unit used in astronomy.
What is a exameter?
Exameter (Em) is a unit of length.
Is the parsec to exameter conversion exact?
Yes. Both parsec and exameter are defined by fixed standards rather than physical artifacts, so the factor of 0.03085677581 used above is exact to as many digits as you choose to display.
Where is the parsec still used today?
Standard distance unit throughout professional astronomy worldwide