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Multiple conversions
To convert an area from square nanometers (nm²) to square micrometers (μm²), divide by 1,000,000 (10⁶).
A micrometer is 1,000 nanometers, and squaring the ratio gives 1,000² = 10⁶ — a million square nanometers tile one square micrometer. Multiply by 10⁶ for the reverse.
An image sensor's photodiode measures 500 nm × 500 nm = 250,000 nm², and the fill-factor calculation for the 1 μm pixel is done in μm²:
The diode therefore covers 25% of its 1 μm² pixel. The reverse multiplies: a 3.5 μm² region is 3,500,000 nm².
| nm² | μm² |
|---|---|
| 1 | 0.000001 |
| 1,000 | 0.001 |
| 250,000 | 0.25 |
| 1,000,000 | 1 |
| 5,000,000 | 5 |
These two units bracket the workbench of nanotechnology. nm² is the currency of device physics: transistor gate areas, quantum dots, AFM tip contact patches and adsorption footprints of single molecules (often given in the adjacent unit Ų, at 100 Ų = 1 nm²). μm² is the currency of layout and microscopy: chip designers budget standard-cell and SRAM bit-cell areas in μm², optical microscopes resolve features down to fractions of a μm², and cell biology quotes bacterial cross-sections — an E. coli seen end-on presents roughly 0.5–1 μm² — in the same unit. The conversion crosses exactly the boundary where electron-microscope measurements feed design documents, and the factor of a million invites the classic squared-unit slip: dividing by 1,000 (the length ratio) instead of 1,000,000 leaves the result a thousandfold wrong. When a fill factor computes to 250 instead of 0.25, the length ratio was used where the area ratio belonged.
To convert from Square Nanometer (nm2) to Square Millimeter (mm2), use the following formula:
Square Millimeter (mm2)
= 11018 × 106× Square Nanometer (nm2)
= 11012× Square Nanometer (nm2)
= 10-12× Square Nanometer (nm2)
To convert from Square Nanometer (nm2) to Square Centimeter (cm2), use the following formula:
Square Centimeter (cm2)
= 11018 × 104× Square Nanometer (nm2)
= 11014× Square Nanometer (nm2)
= 10-14× Square Nanometer (nm2)
To convert from Square Nanometer (nm2) to Square Decimeter (dm2), use the following formula:
Square Decimeter (dm2)
= 11018 × 100× Square Nanometer (nm2)
= 11016× Square Nanometer (nm2)
= 10-16× Square Nanometer (nm2)
To convert from Square Nanometer (nm2) to Square Meter (m2), use the following formula:
Square Meter (m2)
= 11018× Square Nanometer (nm2)
= 10-18× Square Nanometer (nm2)
To convert from Square Nanometer (nm2) to Are (a), use the following formula:
Are (a)
= 11018 × 1100× Square Nanometer (nm2)
= 11020× Square Nanometer (nm2)
= 10-20× Square Nanometer (nm2)
To convert from Square Nanometer (nm2) to Hectare (ha), use the following formula:
Hectare (ha)
= 11018 × 1104× Square Nanometer (nm2)
= 11022× Square Nanometer (nm2)
= 10-22× Square Nanometer (nm2)
To convert from Square Nanometer (nm2) to Square Kilometer (km2), use the following formula:
Square Kilometer (km2)
= 11018 × 1106× Square Nanometer (nm2)
= 11024× Square Nanometer (nm2)
= 10-24× Square Nanometer (nm2)
To convert from Square Nanometer (nm2) to Square Inch (in2), use the following formula:
Square Inch (in2)
= 11018 × 10.7639 × 144× Square Nanometer (nm2)
= 1.5500016× 10-15× Square Nanometer (nm2)
With 10.7639 is the ratio between the base units Square Foot (ft2) and Square Meter (m2).
To convert from Square Nanometer (nm2) to Square Yard (yd2), use the following formula:
Square Yard (yd2)
= 11018 × 10.7639 × 19× Square Nanometer (nm2)
= 1.1959888888888888889× 10-18× Square Nanometer (nm2)
With 10.7639 is the ratio between the base units Square Foot (ft2) and Square Meter (m2).
To convert from Square Nanometer (nm2) to Square Foot (ft2), use the following formula:
Square Foot (ft2)
= 11018 × 10.7639× Square Nanometer (nm2)
= 1.07639× 10-17× Square Nanometer (nm2)
With 10.7639 is the ratio between the base units Square Foot (ft2) and Square Meter (m2).
To convert from Square Nanometer (nm2) to Acre (ac), use the following formula:
Acre (ac)
= 11018 × 10.7639 × 143560× Square Nanometer (nm2)
= 2.4710514233241505969× 10-22× Square Nanometer (nm2)
With 10.7639 is the ratio between the base units Square Foot (ft2) and Square Meter (m2).
To convert from Square Nanometer (nm2) to Square Mile (mi2), use the following formula:
Square Mile (mi2)
= 11018 × 10.7639 × 127878400× Square Nanometer (nm2)
= 3.8610178489439853076× 10-25× Square Nanometer (nm2)
With 10.7639 is the ratio between the base units Square Foot (ft2) and Square Meter (m2).
Ever wonder how companies fit billions of circuits onto a computer chip the size of your fingernail? The magic happens at a scale almost too small to imagine, measured in units called square nanometers.
A square nanometer (nm2) is a unit of area in the metric system, equal to one-quintillionth of a square meter (10-18 m2).
It represents the tiny spaces where the building blocks of our world and our technology are designed and manufactured.
It can be difficult to visualize just how small a square nanometer truly is. This is the scale where we measure individual atoms and molecules.
To put its size into perspective, a single strand of human DNA has a cross-sectional area of approximately 2 to 3 square nanometers. For another comparison, a single sheet of paper is about 100,000 nanometers thick. A square nanometer is an incredibly tiny patch on a surface that is unimaginably smaller.
This minuscule scale is why the nm2 is a fundamental unit in nanotechnology, materials science, and molecular biology. Scientists use it to measure everything from the surface area of nanoparticles to the layout of transistors on a computer chip.
The nm2 is crucial in the semiconductor industry.
The "process node" of a computer chip (e.g., 5 nm or 3 nm)—a key measure of how small and advanced its components are—directly relates to the density of its transistors.
These transistors, the tiny on/off switches that power all modern electronics, are measured in terms of their area in square nanometers. A smaller transistor footprint allows manufacturers to pack billions more of them onto a single chip. Moore's Law famously describes this trend.
This increased density directly leads to more powerful, faster, and more energy-efficient electronic devices, from smartphones to supercomputers.
Understanding how the square nanometer relates to other metric units is key to working in many scientific fields.
Accurately scaling measurements from the macroscopic world down to the nanoscale is essential for design and analysis.
A square nanometer is equivalent to 10-18 square meters (m2). Here are some other common conversions: