Convert Angstrom to Centimeter (Å → cm)

Converting angstroms to centimeters is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in angstroms

   Start with the number of angstroms (Å) you want to convert.
2. 2
   Multiply by 1 × 10^-8

   The conversion factor from Å to cm is 1 × 10^-8. Multiply your value by this number.
3. 3
   Read the result in centimeters

   The result is your value in centimeters (cm).

Multiply the value in angstroms by 1 × 10^-8. For the reverse direction, multiply by 100,000,000.

• ✓1 Å = 0.1 nm = 100 pm. Modern SI recommends nm or pm for new publications.
• ✓The ångström is named after the Swedish physicist Anders Jonas Ångström.
• ✓For quick atomic-scale intuition: most atoms are 1–3 Å across.

• ✗Mixing up Å with µm — the scale differs by 10,000×.
• ✗Using Å for anything macroscopic — always use nm or mm for things visible under a light microscope.
• ✗Forgetting the diacritic in "Ångström" — the symbol Å avoids spelling issues.

What is the Angstrom?

The angstrom equals exactly 0.1 nanometers or 10⁻¹⁰ meters and is the historical unit for atomic and molecular dimensions. Named after Swedish physicist Anders Jonas Ångström (1814–1874), who used it to chart the wavelengths of solar spectral lines, the unit was widely adopted in spectroscopy, crystallography, and chemistry. The diameter of a hydrogen atom is about 1 Å, and visible light wavelengths range from 4,000 to 7,000 Å. While the SI system officially recommends nanometers (10 Å = 1 nm), the angstrom remains common in older physics and chemistry literature, X-ray diffraction studies, and crystal structure data. The symbol Å uses a special character with a circle above the A. The angstrom is one of the few non-SI units still routinely used in scientific publications, particularly in solid-state physics.

• X-ray crystallography and protein structure
• Chemical bond length measurement
• Atomic physics and spectroscopy

What is the Centimeter?

The centimeter equals one hundredth of a meter (0.01 m) and is the everyday metric unit for body measurements, clothing, furniture, and household items. It bridges the gap between the meter (too large for personal items) and the millimeter (too small for clothing). The centimeter is widely used in countries with metric systems for height (a person is 160–185 cm tall), paper sizes (A4 is 21 × 29.7 cm), and medical measurements. Although not strictly an SI base unit, it is one of the most common units in daily metric usage. The centimeter relates to the inch (1 cm ≈ 0.394 in) and to the millimeter (1 cm = 10 mm). It became standard with the metric system's adoption across continental Europe in the 19th century.

• Height and body measurements in medical records
• Ready-to-wear clothing sizes in Europe and Asia
• Furniture and interior design dimensions