Convert Centimeter to Angstrom
Convert centimeters to angstroms instantly. 1 centimeter = 1e+8 angstrom — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Angstrom to Centimeter converter for the reverse conversion.
Units explained
Centimeter
A centimeter is a metric unit of length equal to one hundredth of a meter (1/100 m). It is one of the most commonly used SI sub-units in daily life, especially for measuring small objects, body dimensions, paper sizes, and short distances.
The centimeter emerged from the French metric system established by the French Academy of Sciences in 1793. The metric system introduced decimal-based prefixes (milli-, centi-, deci-, deca-, hecto-, kilo-) to create proportional sub-units of the meter.
Centimeters are the standard unit for everyday measurement in nearly every country outside the United States. They are used for body height, clothing sizes, rainfall, paper formats (A4 is 21 × 29.7 cm), screen dimensions, and most consumer product specifications.
Developed in France during the late 18th century as part of the metric system designed by the French Academy of Sciences. Formally adopted in France in 1795 and ratified internationally through the Metre Convention signed in Paris in 1875.
Angstrom
An angstrom is a unit of length equal to exactly 10⁻¹⁰ meters (0.1 nm). Named after Swedish physicist Anders Jonas Ångström, it is the traditional unit for atomic and molecular dimensions in chemistry and crystallography.
Defined in 1907 as exactly 10⁻¹⁰ m. Although officially deprecated by the BIPM in favor of the nanometer in 1978, the angstrom remains in widespread use in chemistry and crystallography.
Angstroms express bond lengths (typical covalent bond is 1–2 Å), atomic radii, crystal lattice parameters, and X-ray wavelengths. Standard in chemistry textbooks and crystallographic data tables.
Named after Anders Jonas Ångström; defined at 10⁻¹⁰ m in 1907; deprecated as SI by BIPM in 1978 but retained universally in chemistry practice.
Centimeter to Angstrom conversion formula
The relationship between centimeters and angstroms:
To convert centimeters to angstroms, multiply the value in centimeters by 1e+8. To reverse, multiply angstroms by 1e-8.
How to use this converter
Type a value into the calculator. The result in angstroms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Angstrom to Centimeter converter for the reverse direction.
Step-by-step: convert centimeters to angstroms
- Write down the value in centimeters (cm).
- Multiply that value by the factor 1e+8.
- The product is the equivalent value in angstroms (Å).
- To reverse, multiply the angstrom value by 1e-8.
Worked examples
Example 1 — Convert 1 cm to Å:
1 × 1e+8 = 1e+8 Å
Example 2 — Convert 100 cm to Å:
100 × 1e+8 = 1e+10 Å
Real-world example — Small-scale to atomic-scale
One centimeter equals 10 million angstroms — useful for physics curricula that relate everyday measurements to atomic and optical scales.
1 cm × 1e+8 = 1e+8 Å
Real-world example — Centimeter to wavelength scale
One centimeter equals 10 million angstroms. Physics curricula use this kind of conversion to relate everyday measurements to atomic and optical scales.
1 cm × 1e+8 = 1e+8 Å
Centimeter to Angstrom conversion table
Standard reference values for converting centimeters to angstroms:
| Centimeter [cm] | Angstrom [Å] |
|---|---|
| 0.01 | 1000000 |
| 0.1 | 1e+7 |
| 1 | 1e+8 |
| 2 | 2e+8 |
| 3 | 3e+8 |
| 4 | 4e+8 |
| 5 | 5e+8 |
| 10 | 1e+9 |
| 20 | 2e+9 |
| 30 | 3e+9 |
| 40 | 4e+9 |
| 50 | 5e+9 |
| 100 | 1e+10 |
| 500 | 5e+10 |
| 1000 | 1e+11 |
Frequently asked questions
How many angstroms is 1 centimeter?
How do I convert centimeters to angstroms?
How do I convert angstroms back to centimeters?
How many angstroms is 100 centimeters?
Popular length unit conversions
Convert Centimeter to other length units
Show all Centimeter conversions
Metric / SI (17 units)
Imperial / US Customary (27 units)
Nautical (1 units)
Astronomical (9 units)
Atomic / Physics (6 units)
Typographic (3 units)
Sources & references
Conversion factor (1 cm = 1e+8 Å) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.