Convert Nanometer to Micrometer
Convert nanometers to micrometers instantly. 1 nanometer = 0.001 micrometer — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Micrometer to Nanometer converter for the reverse conversion.
Units explained
Nanometer
A nanometer is a metric unit of length equal to one billionth of a meter (1×10⁻⁹ m). It is the standard unit for measuring atomic and molecular dimensions and is widely used in physics, chemistry, and electronics.
Defined using the SI prefix nano- (from Greek nanos, "dwarf") to denote one-billionth, adopted by the General Conference on Weights and Measures (CGPM) in 1960.
Nanometers are used to measure wavelengths of visible light (400–700 nm), semiconductor transistor sizes (currently 3–5 nm process nodes), DNA double helix width (2 nm), and atomic radii. The 2019 SI redefinition fixed the meter to the speed of light, making nanometer definitions exact to atomic precision.
SI prefix nano- adopted by the CGPM in 1960; nanometer became the standard unit for nanotechnology and optical wavelengths during the late 20th century.
Micrometer
A micrometer (also called a micron) is a metric unit of length equal to one millionth of a meter (1×10⁻⁶ m). It is the standard unit for measuring microscopic dimensions in biology, materials science, and semiconductor manufacturing.
Defined alongside the meter when France adopted the metric system in 1795, using the SI prefix micro- (from Greek mikros, "small") to denote one-millionth.
Micrometers are used to measure cell sizes, bacteria, semiconductor process nodes, fiber diameters, dust particles, and wavelengths of infrared radiation. The diameter of a human hair is about 70 μm.
Defined in 1795 as part of the original French metric system; the name "micron" was officially deprecated by the BIPM in 1967 in favor of micrometer.
Nanometer to Micrometer conversion formula
The relationship between nanometers and micrometers:
To convert nanometers to micrometers, multiply the value in nanometers by 0.001. To reverse, multiply micrometers by 1000.
How to use this converter
Type a value into the calculator. The result in micrometers updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Micrometer to Nanometer converter for the reverse direction.
Step-by-step: convert nanometers to micrometers
- Write down the value in nanometers (nm).
- Multiply that value by the factor 0.001.
- The product is the equivalent value in micrometers (μm).
- To reverse, multiply the micrometer value by 1000.
Worked examples
Example 1 — Convert 1 nm to μm:
1 × 0.001 = 0.001 μm
Example 2 — Convert 100 nm to μm:
100 × 0.001 = 0.1 μm
Real-world example — Nanometer to micrometer
1,000 nm equals 1 μm. The conversion is fundamental to biology and electronics: cell features measured in μm, sub-cellular features and semiconductor process nodes measured in nm.
1 nm × 0.001 = 0.001 μm
Real-world example — Visible-light wavelength to micron-scale
500 nm (green-yellow light) equals 0.5 μm. Optical engineers converting wavelength specs (in nm) to lens-coating thickness specs (in μm) do this conversion at every coating-design step.
500 nm × 0.001 = 0.5 μm
Real-world example — Semiconductor node to micron
A 7-nm semiconductor process node equals 0.007 μm. Chip designers translating sub-7nm specs into the μm scale of optical metrology equipment do this conversion at every test-and-measurement step.
7 nm × 0.001 = 0.007 μm
Nanometer to Micrometer conversion table
Standard reference values for converting nanometers to micrometers:
| Nanometer [nm] | Micrometer [μm] |
|---|---|
| 0.01 | 1e-5 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 30 | 0.03 |
| 40 | 0.04 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Frequently asked questions
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Sources & references
Conversion factor (1 nm = 0.001 μm) 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.