A desktop publishing point is 1/72 inch.
Points to Angstroms Converter — pt to A
Convert Point (pt) to Angstrom (A) using the exact conversion factor (1 point = 3,527,777.778 angstrom). See the formula, worked examples, conversion table, history, and common uses.
Points to Angstroms 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.
An angstrom is 1e-10 meters.
Result = input x 0.0003527777778 / 1e-10.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Points to Angstroms
Point and Angstrom both measure length. Specifically: A desktop publishing point is 1/72 inch, and an angstrom is 1e-10 meters.
Formula
angstroms = points × 3527777.778
This factor comes from each unit's defined relationship to the category's base unit: 1 point equals 0.0003527777778 base units, and 1 angstrom equals 1e-10 base units, so dividing one by the other gives the direct point-to-angstrom factor of 3527777.778.
Simple example
1 pt × 3527777.778 = 3,527,777.778 A
1 point = 3,527,777.778 angstroms.
Real-world example
10 pt × 3527777.778 = 35,277,777.78 A
10 points = 35,277,777.78 angstroms.
Conversion table
| Point (pt) | Angstrom (A) |
|---|---|
| 1 pt | 3,527,777.778 A |
| 5 pt | 17,638,888.89 A |
| 10 pt | 35,277,777.78 A |
| 21.0975 pt | 74,427,291.67 A |
| 42.195 pt | 148,854,583.3 A |
| 100 pt | 352,777,777.8 A |
Reverse conversion: Angstrom to Point
1 A × 2.834646e-7 = 2.834646e-7 pt
1 angstrom = 2.834646e-7 points.
points = angstroms × 2.834646e-7
For a page dedicated to this direction, see Angstrom to Point.
Understanding the Point (pt)
A desktop publishing point is 1/72 inch.
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.
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 angstroms are in 1 point?
1 point equals 3,527,777.778 angstroms, using the exact defined conversion factor rather than an estimate.
How do I convert point to angstrom?
Multiply the point value by 3527777.778. The converter above does this instantly to whatever precision you set.
How do I convert angstrom back to point?
Use the reverse factor: 1 angstrom equals 2.834646e-7 points. You can also use the swap control in the converter above to flip the direction instantly.
What is a point?
Point (pt) is a unit of length.
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.
Is the point to angstrom 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.