Convert Are to Square Nanometer
Convert ares to square nanometers instantly. 1 are = 1e+20 square nanometer — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Square Nanometer to Are converter for the reverse conversion.
Units explained
Are
An are is a metric unit of area equal to 100 square meters. It is used in some European countries for land measurement, especially for smaller plots like vineyards and gardens.
Introduced as part of the French metric system in 1795. The name comes from the Latin 'area' meaning surface or open ground.
Ares are still used in some European countries (especially Switzerland and France) for small-plot land measurement. In Switzerland, an are is a common unit for vineyard size. Most modern contexts prefer square meters or hectares.
Defined in 1795 in France as part of the original metric system.
Square Nanometer
A square nanometer is a metric unit of area equal to 10⁻¹⁸ m² (1 nm × 1 nm). It is the standard unit in nanotechnology and surface science for expressing the area of nanoscale structures.
Derived by squaring the nanometer (10⁻⁹ m). The nano- prefix comes from the Greek 'nanos' (dwarf).
Square nanometers are used to express the surface area of nanoparticles, the footprint of single molecules adsorbed on surfaces, and the active area of nanoscale electronic devices.
Nanometer adopted into SI in 1960; widespread use in nanotechnology grew through the 1990s and 2000s.
Are to Square Nanometer conversion formula
The relationship between ares and square nanometers:
To convert ares to square nanometers, multiply the value in ares by 1e+20. To reverse, multiply square nanometers by 1e-20.
How to use this converter
Type a value into the calculator. The result in square nanometers updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Square Nanometer to Are converter for the reverse direction.
Step-by-step: convert ares to square nanometers
- Write down the value in ares (a).
- Multiply that value by the factor 1e+20.
- The product is the equivalent value in square nanometers (nm²).
- To reverse, multiply the square nanometer value by 1e-20.
Worked examples
Example 1 — Convert 1 a to nm²:
1 × 1e+20 = 1e+20 nm²
Example 2 — Convert 100 a to nm²:
100 × 1e+20 = 1e+22 nm²
Are to Square Nanometer conversion table
Standard reference values for converting ares to square nanometers:
| Are [a] | Square Nanometer [nm²] |
|---|---|
| 0.01 | 1e+18 |
| 0.1 | 1e+19 |
| 1 | 1e+20 |
| 2 | 2e+20 |
| 3 | 3e+20 |
| 4 | 4e+20 |
| 5 | 5e+20 |
| 10 | 1e+21 |
| 20 | 2e+21 |
| 30 | 3e+21 |
| 40 | 4e+21 |
| 50 | 5e+21 |
| 100 | 1e+22 |
| 500 | 5e+22 |
| 1000 | 1e+23 |
Frequently asked questions
How many square nanometers is 1 are?
How do I convert ares to square nanometers?
How do I convert square nanometers back to ares?
How many square nanometers is 100 ares?
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Metric / SI (15 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 a = 1e+20 nm²) 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.