Convert Angstrom to Meter
Convert angstroms to meters instantly. 1 angstrom = 1e-10 meter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Meter to Angstrom converter for the reverse conversion.
Units explained
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.
Meter
The meter is the SI base unit of length. Since 2019, the meter has been defined by fixing the numerical value of the speed of light in vacuum to exactly 299,792,458 meters per second. Every other SI length unit derives from the meter.
The meter was originally defined in 1793 by the French Academy of Sciences as one ten-millionth of the distance from the equator to the North Pole along a meridian through Paris. It has been redefined multiple times — by physical prototype, then by atomic transitions, and finally in 2019 by fundamental physical constants.
The meter is the international standard for length in science, engineering, construction, athletics, and everyday measurement in metric countries. It underpins definitions of area (m²), volume (m³), and most derived SI units.
Established 1793 in France; ratified internationally via the Metre Convention 1875; redefined in 1960, 1983, and most recently 2019 when the SI redefinition fixed it to the speed of light.
Angstrom to Meter conversion formula
The relationship between angstroms and meters:
To convert angstroms to meters, multiply the value in angstroms by 1e-10. To reverse, multiply meters by 1e+10.
How to use this converter
Type a value into the calculator. The result in meters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Meter to Angstrom converter for the reverse direction.
Step-by-step: convert angstroms to meters
- Write down the value in angstroms (Å).
- Multiply that value by the factor 1e-10.
- The product is the equivalent value in meters (m).
- To reverse, multiply the meter value by 1e+10.
Worked examples
Example 1 — Convert 1 Å to m:
1 × 1e-10 = 1e-10 m
Example 2 — Convert 100 Å to m:
100 × 1e-10 = 1e-8 m
Real-world example — Bridging nine orders of magnitude
500 million angstroms equals a value comfortably in the human-scale meters range. Physics problems that span this gap are common when comparing the wavelength of light to the path length of an experiment.
5e+8 Å × 1e-10 = 0.05 m
Real-world example — From sub-micron to human scale
One billion angstroms equals one meter — the conversion that drives home the gulf between atomic-scale features and everyday objects in physics curricula.
1e+9 Å × 1e-10 = 0.1 m
Angstrom to Meter conversion table
Standard reference values for converting angstroms to meters:
| Angstrom [Å] | Meter [m] |
|---|---|
| 0.01 | 1e-12 |
| 0.1 | 1e-11 |
| 1 | 1e-10 |
| 2 | 2e-10 |
| 3 | 3e-10 |
| 4 | 4e-10 |
| 5 | 5e-10 |
| 10 | 1e-9 |
| 20 | 2e-9 |
| 30 | 3e-9 |
| 40 | 4e-9 |
| 50 | 5e-9 |
| 100 | 1e-8 |
| 500 | 5e-8 |
| 1000 | 1e-7 |
Frequently asked questions
How many meters is 1 angstrom?
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Sources & references
Conversion factor (1 Å = 1e-10 m) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.