An angstrom is 1e-10 meters.
Angstroms to Feet Converter — A to ft
Convert Angstrom (A) to Foot (ft) using the exact conversion factor (1 angstrom = 3.28084e-10 foot). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Angstroms to Feet 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.
A foot is exactly 0.3048 meters.
Result = input x 1e-10 / 0.3048.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Angstroms to Feet
Angstrom and Foot both measure length. Angstrom is typically associated with widely used internationally in chemistry, crystallography, and atomic/molecular physics, while Foot is typically associated with united States (height, construction, aviation altitude).
Formula
feet = angstroms × 3.28084e-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 foot equals 0.3048 base units, so dividing one by the other gives the direct angstrom-to-foot factor of 3.28084e-10.
Simple example
1 A × 3.28084e-10 = 3.28084e-10 ft
1 angstrom = 3.28084e-10 feet.
Real-world example
10 A × 3.28084e-10 = 3.28084e-9 ft
10 angstroms = 3.28084e-9 feet.
Conversion table
| Angstrom (A) | Foot (ft) |
|---|---|
| 1 A | 3.28084e-10 ft |
| 5 A | 1.64042e-9 ft |
| 10 A | 3.28084e-9 ft |
| 21.0975 A | 6.921752e-9 ft |
| 42.195 A | 1.38435e-8 ft |
| 100 A | 3.28084e-8 ft |
Reverse conversion: Foot to Angstrom
3.28084e-10 ft × 3048000000 = 1.000000032 A
3.28084e-10 feet = 1.000000032 angstroms.
angstroms = feet × 3048000000
For a page dedicated to this direction, see Foot to Angstrom.
Angstrom vs. Foot
| Aspect | Angstrom | Foot |
|---|---|---|
| Family | non-SI unit, still common in chemistry and crystallography | US/imperial customary unit |
| Typical use | Atomic and ionic radii in chemistry | Height measurement in the US and UK |
| Where it's used | Widely used internationally in chemistry, crystallography, and atomic/molecular physics | United States (height, construction, aviation altitude) |
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 Foot
Foot (ft) measures distance. The international foot is defined as exactly 0.3048 meters. It is classified as a US/imperial customary unit.
Where it's used: United States (height, construction, aviation altitude) United Kingdom (height, some construction contexts)
Uses of the Foot today
- Height measurement in the US and UK
- US construction and real estate (square footage)
- Aviation altitude worldwide (feet remain standard even in metric countries)
History of the Foot
The foot has ancient roots (Roman 'pes', various regional English feet), standardized into the modern English foot over centuries. The international foot (exactly 0.3048 m) was fixed by the 1959 International Yard and Pound Agreement, resolving small historical differences between US and UK measurements.
Historical origin. Foot 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.
Foot — sources
- NIST — International yard and pound (1959) — Fixes the modern foot at exactly 0.3048 meters.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many feet are in 1 angstrom?
1 angstrom equals 3.28084e-10 feet, using the exact defined conversion factor rather than an estimate.
How do I convert angstrom to foot?
Multiply the angstrom value by 3.28084e-10. The converter above does this instantly to whatever precision you set.
How do I convert foot back to angstrom?
Use the reverse factor: 1 foot equals 3,048,000,000 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 foot?
Foot (ft) measures distance. The international foot is defined as exactly 0.3048 meters. It is classified as a US/imperial customary unit.
Is the angstrom to foot conversion exact?
Yes. The international foot is defined as exactly 0.3048 meters. 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