An angstrom is 1e-10 meters.
Angstroms to Parsecs Converter — A to pc
Convert Angstrom (A) to Parsec (pc) using the exact conversion factor (1 angstrom = 3.240779e-27 parsec). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Angstroms to Parsecs converter
Converter
Scientific Units Converter
Convert SI derived units, scientific notation-friendly units, atomic units, and lab measurements.
Context values
Some unit families need one extra value for a physically accurate result.
A parsec is about 3.26156 light-years.
Result = input x 1e-10 / 3.08567758e+16.
Length units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Angstroms to Parsecs
Angstrom and Parsec are both scientific-measurement units, spanning everything from atomic and laboratory scales to astronomical distances — the kind of conversion that comes up constantly in physics, chemistry, and astronomy when a result needs to move between conventions used in different subfields. Angstrom is typically associated with widely used internationally in chemistry, crystallography, and atomic/molecular physics, while Parsec is typically associated with standard distance unit throughout professional astronomy worldwide.
Formula
parsecs = angstroms × 3.240779e-27
This factor comes from each unit's defined relationship to the category's base unit: 1 angstrom equals 1e-10 base units, and 1 parsec equals 3.085678e+16 base units, so dividing one by the other gives the direct angstrom-to-parsec factor of 3.240779e-27.
Simple example
1 A × 3.240779e-27 = 3.240779e-27 pc
1 angstrom = 3.240779e-27 parsecs.
Real-world example
10 A × 3.240779e-27 = 3.240779e-26 pc
10 angstroms = 3.240779e-26 parsecs.
Conversion table
| Angstrom (A) | Parsec (pc) |
|---|---|
| 0.001 A | 3.240779e-30 pc |
| 0.01 A | 3.240779e-29 pc |
| 1 A | 3.240779e-27 pc |
| 10 A | 3.240779e-26 pc |
| 100 A | 3.240779e-25 pc |
| 1,000 A | 3.240779e-24 pc |
Reverse conversion: Parsec to Angstrom
3.240779e-27 pc × 3.085678e+26 = 0.9999999107 A
3.240779e-27 parsecs = 0.9999999107 angstroms.
angstroms = parsecs × 3.085678e+26
For a page dedicated to this direction, see Parsec to Angstrom.
Angstrom vs. Parsec
| Aspect | Angstrom | Parsec |
|---|---|---|
| Family | non-SI unit, still common in chemistry and crystallography | non-SI unit used in astronomy |
| Typical use | Atomic and ionic radii in chemistry | Measuring distances to nearby stars via parallax |
| Where it's used | Widely used internationally in chemistry, crystallography, and atomic/molecular physics | Standard distance unit throughout professional astronomy worldwide |
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.
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.
Angstrom — sources
- NIST Guide to the SI, Appendix B — Lists the angstrom among non-SI units still in use with an exact SI equivalence.
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 parsecs are in 1 angstrom?
1 angstrom equals 3.240779e-27 parsecs, using the exact defined conversion factor rather than an estimate.
How do I convert angstrom to parsec?
Multiply the angstrom value by 3.240779e-27. The converter above does this instantly to whatever precision you set.
How do I convert parsec back to angstrom?
Use the reverse factor: 1 parsec equals 3.085678e+26 angstroms. You can also use the swap control in the converter above to flip the direction instantly.
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.
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.
Is the angstrom to parsec 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 angstrom still used today?
Widely used internationally in chemistry, crystallography, and atomic/molecular physics
Why does this category span everything from atomic to astronomical scales?
Scientific work spans an enormous range of physical scales, from atomic distances (measured in angstroms or atomic mass units) to interstellar distances (measured in astronomical units or parsecs), so this category groups SI-derived and scale-specific units that researchers commonly need to convert between within their field.