An angstrom is 1e-10 meters.
Angstroms to Meters Converter — A to m
Convert Angstrom (A) to Meter (m) using the exact conversion factor (1 angstrom = 1e-10 meter). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Angstroms to Meters 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.
The meter is the SI base unit of length.
Result = input x 1e-10 / 1.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Angstroms to Meters
Angstrom and Meter both measure length. Angstrom is typically associated with widely used internationally in chemistry, crystallography, and atomic/molecular physics, while Meter is typically associated with standard length unit worldwide except the US.
Formula
meters = angstroms × 1e-10
This factor comes from each unit's defined relationship to the category's base unit: 1 angstrom equals 1e-10 base units, and 1 meter equals 1 base unit, so dividing one by the other gives the direct angstrom-to-meter factor of 1e-10.
Simple example
1 A × 1e-10 = 1e-10 m
1 angstrom = 1e-10 meters.
Real-world example
10 A × 1e-10 = 1e-9 m
10 angstroms = 1e-9 meters.
Conversion table
| Angstrom (A) | Meter (m) |
|---|---|
| 1 A | 1e-10 m |
| 5 A | 5e-10 m |
| 10 A | 1e-9 m |
| 21.0975 A | 2.10975e-9 m |
| 42.195 A | 4.2195e-9 m |
| 100 A | 1e-8 m |
Reverse conversion: Meter to Angstrom
1e-10 m × 10000000000 = 1 A
1e-10 meters = 1 angstrom.
angstroms = meters × 10000000000
For a page dedicated to this direction, see Meter to Angstrom.
Angstrom vs. Meter
| Aspect | Angstrom | Meter |
|---|---|---|
| Family | non-SI unit, still common in chemistry and crystallography | SI base unit |
| Typical use | Atomic and ionic radii in chemistry | Universal scientific and everyday length measurement outside the US |
| Where it's used | Widely used internationally in chemistry, crystallography, and atomic/molecular physics | Standard 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 Meter
Meter (m) measures distance. The meter is the SI base unit of length, currently defined via the fixed speed of light. It is classified as a SI base unit.
Where it's used: Standard length unit worldwide except the US
Uses of the Meter today
- Universal scientific and everyday length measurement outside the US
- Construction, engineering, and manufacturing internationally
History of the Meter
Defined during the French Revolutionary metric reforms as one ten-millionth of the distance from the North Pole to the Equator, the meter has been redefined several times for precision — a platinum-iridium bar (1889), a krypton-86 wavelength (1960), and since 1983, the distance light travels in 1/299,792,458 of a second.
Historical origin. Meter 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.
Meter — sources
- BIPM — The metre (SI base unit) — Current definition and history of the meter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many meters are in 1 angstrom?
1 angstrom equals 1e-10 meters, using the exact defined conversion factor rather than an estimate.
How do I convert angstrom to meter?
Multiply the angstrom value by 1e-10. The converter above does this instantly to whatever precision you set.
How do I convert meter back to angstrom?
Use the reverse factor: 1 meter equals 10,000,000,000 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 meter?
Meter (m) measures distance. The meter is the SI base unit of length, currently defined via the fixed speed of light. It is classified as a SI base unit.
Is the angstrom to meter 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