A parsec is about 3.26156 light-years.
Parsecs to Angstroms Converter — pc to A
Convert Parsec (pc) to Angstrom (A) using the exact conversion factor (1 parsec = 3.085678e+26 angstrom). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Parsecs to Angstroms 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.
An angstrom is 1e-10 meters.
Result = input x 3.08567758e+16 / 1e-10.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Parsecs to Angstroms
Parsec and Angstrom both measure length. Parsec is typically associated with standard distance unit throughout professional astronomy worldwide, while Angstrom is typically associated with widely used internationally in chemistry, crystallography, and atomic/molecular physics.
Formula
angstroms = parsecs × 3.085678e+26
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 angstrom equals 1e-10 base units, so dividing one by the other gives the direct parsec-to-angstrom factor of 3.085678e+26.
Simple example
1 pc × 3.085678e+26 = 3.085678e+26 A
1 parsec = 3.085678e+26 angstroms.
Real-world example
10 pc × 3.085678e+26 = 3.085678e+27 A
10 parsecs = 3.085678e+27 angstroms.
Conversion table
| Parsec (pc) | Angstrom (A) |
|---|---|
| 1 pc | 3.085678e+26 A |
| 5 pc | 1.542839e+27 A |
| 10 pc | 3.085678e+27 A |
| 21.0975 pc | 6.510008e+27 A |
| 42.195 pc | 1.302002e+28 A |
| 100 pc | 3.085678e+28 A |
Reverse conversion: Angstrom to Parsec
3.085678e+26 A × 3.240779e-27 = 1.000000136 pc
3.085678e+26 angstroms = 1.000000136 parsecs.
parsecs = angstroms × 3.240779e-27
For a page dedicated to this direction, see Angstrom to Parsec.
Parsec vs. Angstrom
| Aspect | Parsec | Angstrom |
|---|---|---|
| Family | non-SI unit used in astronomy | non-SI unit, still common in chemistry and crystallography |
| Typical use | Measuring distances to nearby stars via parallax | Atomic and ionic radii in chemistry |
| Where it's used | Standard distance unit throughout professional astronomy worldwide | Widely used internationally in chemistry, crystallography, and atomic/molecular physics |
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 Angstrom
Angstrom (A) measures length. Equal to exactly 10⁻¹⁰ meters (0.1 nanometers) — a scale convenient for describing atomic radii, bond lengths, and crystal structures. It is classified as a non-SI unit, still common in chemistry and crystallography.
Where it's used: Widely used internationally in chemistry, crystallography, and atomic/molecular physics
Uses of the Angstrom today
- Atomic and ionic radii in chemistry
- Chemical bond-length measurements
- X-ray crystallography and wavelength measurements
History of the Angstrom
The angstrom is named after Anders Jonas Ångström (1814–1874), a Swedish physicist and one of the founders of spectroscopy, who used the unit in his 1868 atlas of the solar spectrum.
Historical origin. Angstrom was not the invention of a single named person; it developed through the process described above.
Parsec — sources
- IAU (International Astronomical Union) — parsec definition — Standard astronomical definition of the parsec via stellar parallax.
Angstrom — sources
- NIST Guide to the SI, Appendix B — Lists the angstrom among non-SI units still in use with an exact SI equivalence.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many angstroms are in 1 parsec?
1 parsec equals 3.085678e+26 angstroms, using the exact defined conversion factor rather than an estimate.
How do I convert parsec to angstrom?
Multiply the parsec value by 3.085678e+26. The converter above does this instantly to whatever precision you set.
How do I convert angstrom back to parsec?
Use the reverse factor: 1 angstrom equals 3.240779e-27 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 angstrom?
Angstrom (A) measures length. Equal to exactly 10⁻¹⁰ meters (0.1 nanometers) — a scale convenient for describing atomic radii, bond lengths, and crystal structures. It is classified as a non-SI unit, still common in chemistry and crystallography.
Is the parsec to angstrom conversion exact?
Yes. Equal to exactly 10⁻¹⁰ meters (0.1 nanometers) — a scale convenient for describing atomic radii, bond lengths, and crystal structures. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the parsec still used today?
Standard distance unit throughout professional astronomy worldwide