An angstrom is 1e-10 meters.
Angstroms to Centimeters Converter — A to cm
Convert Angstrom (A) to Centimeter (cm) using the exact conversion factor (1 angstrom = 1e-8 centimeter). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Angstroms to Centimeters 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.
Centimeter is 0.01 meter units.
Result = input x 1e-10 / 0.01.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Angstroms to Centimeters
Angstrom and Centimeter both measure length. Angstrom is typically associated with widely used internationally in chemistry, crystallography, and atomic/molecular physics, while Centimeter is typically associated with standard small-length unit worldwide except the US.
Formula
centimeters = angstroms × 1e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 angstrom equals 1e-10 base units, and 1 centimeter equals 0.01 base units, so dividing one by the other gives the direct angstrom-to-centimeter factor of 1e-8.
Simple example
1 A × 1e-8 = 1e-8 cm
1 angstrom = 1e-8 centimeters.
Real-world example
10 A × 1e-8 = 1e-7 cm
10 angstroms = 1e-7 centimeters.
Conversion table
| Angstrom (A) | Centimeter (cm) |
|---|---|
| 1 A | 1e-8 cm |
| 5 A | 5e-8 cm |
| 10 A | 1e-7 cm |
| 21.0975 A | 2.10975e-7 cm |
| 42.195 A | 4.2195e-7 cm |
| 100 A | 0.000001 cm |
Reverse conversion: Centimeter to Angstrom
1e-8 cm × 100000000 = 1 A
1e-8 centimeters = 1 angstrom.
angstroms = centimeters × 100000000
For a page dedicated to this direction, see Centimeter to Angstrom.
Angstrom vs. Centimeter
| Aspect | Angstrom | Centimeter |
|---|---|---|
| Family | non-SI unit, still common in chemistry and crystallography | SI derived (metric prefix) unit |
| Typical use | Atomic and ionic radii in chemistry | Everyday small-object and body measurement (height, clothing sizes) outside the US |
| Where it's used | Widely used internationally in chemistry, crystallography, and atomic/molecular physics | Standard small-length unit worldwide except the US |
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 Centimeter
Centimeter (cm) measures distance. A centimeter is one-hundredth of a meter. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard small-length unit worldwide except the US
Uses of the Centimeter today
- Everyday small-object and body measurement (height, clothing sizes) outside the US
- Construction and manufacturing tolerances internationally
History of the Centimeter
The centimeter follows directly from the meter via the 'centi-' SI prefix (10⁻²), introduced with the metric system in the 1790s.
Historical origin. Centimeter 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.
Centimeter — sources
- BIPM SI Brochure — SI prefixes — Defines 'centi-' as the prefix for 10⁻².
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centimeters are in 1 angstrom?
1 angstrom equals 1e-8 centimeters, using the exact defined conversion factor rather than an estimate.
How do I convert angstrom to centimeter?
Multiply the angstrom value by 1e-8. The converter above does this instantly to whatever precision you set.
How do I convert centimeter back to angstrom?
Use the reverse factor: 1 centimeter equals 100,000,000 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 centimeter?
Centimeter (cm) measures distance. A centimeter is one-hundredth of a meter. It is classified as a SI derived (metric prefix) unit.
Is the angstrom to centimeter 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