An angstrom is 1e-10 meters.
Angstroms to Nanometers Converter — A to nm
Convert Angstrom (A) to Nanometer (nm) using the exact conversion factor (1 angstrom = 0.1 nanometer). See the formula, worked examples, conversion table, history, and common uses.
Angstroms to Nanometers 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.
Nanometer is 1e-9 meter units.
Result = input x 1e-10 / 1e-9.
Length units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Angstroms to Nanometers
Angstrom and Nanometer 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 most often used for atomic and ionic radii in chemistry.
Formula
nanometers = angstroms × 0.1
This factor comes from each unit's defined relationship to the category's base unit: 1 angstrom equals 1e-10 base units, and 1 nanometer equals 1e-9 base units, so dividing one by the other gives the direct angstrom-to-nanometer factor of 0.1.
Simple example
1 A × 0.1 = 0.1 nm
1 angstrom = 0.1 nanometers.
Real-world example
10 A × 0.1 = 1 nm
10 angstroms = 1 nanometer.
Conversion table
| Angstrom (A) | Nanometer (nm) |
|---|---|
| 0.001 A | 0.0001 nm |
| 0.01 A | 0.001 nm |
| 1 A | 0.1 nm |
| 10 A | 1 nm |
| 100 A | 10 nm |
| 1,000 A | 100 nm |
Reverse conversion: Nanometer to Angstrom
0.1 nm × 10 = 1 A
0.1 nanometers = 1 angstroms.
angstroms = nanometers × 10
For a page dedicated to this direction, see Nanometer to Angstrom.
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 Nanometer (nm)
Nanometer is 1e-9 meter units.
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 nanometers are in 1 angstrom?
1 angstrom equals 0.1 nanometers, using the exact defined conversion factor rather than an estimate.
How do I convert angstrom to nanometer?
Multiply the angstrom value by 0.1. The converter above does this instantly to whatever precision you set.
How do I convert nanometer back to angstrom?
Use the reverse factor: 1 nanometer equals 10 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 nanometer?
Nanometer (nm) is a unit of scientific units.
Is the angstrom to nanometer 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.