Um To Nm Calculator 2026
Instantly convert micrometers (μm) to nanometers (nm), millimeters, meters, and picometers. Perfect for nanotechnology, physics, and molecular science.
Length Conversion
Enter your measurement in micrometers to convert to nanometers
Enter the length in micrometers (also called microns).
Choose how precisely to round the nanometer result.
Conversion Results
Nanometers and other metric units
Enter your length in micrometers above and click Convert to Nm to see the results.
Common Micrometer Conversions
Use this chart to quickly estimate the nanometer equivalent for common micrometer measurements, from atoms to microscopic organisms.
| Micrometers (μm) | Nanometers (nm) | Millimeters (mm) | Common Reference |
|---|---|---|---|
| 0.001 μm | 1 nm | 0.000001 mm | Size of small molecule |
| 0.1 μm | 100 nm | 0.0001 mm | Virus / Quantum dot |
| 0.5 μm | 500 nm | 0.0005 mm | Wavelength of light |
| 1 μm | 1,000 nm | 0.001 mm | Bacteria / Cell organelle |
| 10 μm | 10,000 nm | 0.01 mm | Red blood cell |
| 70 μm | 70,000 nm | 0.07 mm | Human hair diameter |
| 100 μm | 100,000 nm | 0.1 mm | Paper thickness |
| 1000 μm | 1,000,000 nm | 1.0 mm | Grain of sand |
Nanometer Conversion FAQ
Everything you need to know about converting micrometers to nanometers, understanding atomic scale, and scientific measurements.
To convert micrometers (μm) to nanometers (nm), multiply the number of micrometers by 1,000. Since one micrometer equals 1,000 nanometers, the formula is: Nanometers = Micrometers × 1,000.
A nanometer is a unit of length in the metric system equal to one billionth of a meter (10⁻⁹ m). It is commonly used in nanotechnology, semiconductor manufacturing, and molecular biology to measure atoms, molecules, and nanostructures.
There are exactly 1,000 nanometers in one micrometer. This is because a micrometer is one millionth of a meter (10⁻⁶ m) and a nanometer is one billionth of a meter (10⁻⁹ m), so 10⁻⁶ ÷ 10⁻⁹ = 1,000.
Atoms typically range from 0.1 to 0.5 nanometers in diameter. For example, a hydrogen atom is about 0.1 nm, while larger atoms like uranium are about 0.35 nm. This is equivalent to 0.0001 to 0.0005 micrometers.
A micrometer (μm) is 1,000 times larger than a nanometer (nm). While micrometers are used to measure cells and bacteria, nanometers are used to measure atoms, molecules, and nanostructures. Both are far smaller than what the human eye can see.
The formula to convert micrometers to nanometers is: nm = μm × 1,000. Simply multiply the number of micrometers by one thousand to get the equivalent length in nanometers.