Nanometer is 1e-9 meter units.
Nanometers to Micrometers Converter — nm to um
Convert Nanometer (nm) to Micrometer (um) using the exact conversion factor (1 nanometer = 0.001 micrometer). See the formula, worked examples, and conversion table.
Nanometers to Micrometers converter
Converter
Scientific Units Converter
Convert SI derived units, scientific notation-friendly units, atomic units, and lab measurements.
Context values
Some unit families need one extra value for a physically accurate result.
Micrometer is 0.000001 meter units.
Result = input x 1e-9 / 1e-6.
Length units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Nanometers to Micrometers
Nanometer and Micrometer are both scientific-measurement units, spanning everything from atomic and laboratory scales to astronomical distances — the kind of conversion that comes up constantly in physics, chemistry, and astronomy when a result needs to move between conventions used in different subfields. Specifically: Nanometer is 1e-9 meter units, and micrometer is 0.000001 meter units.
Formula
micrometers = nanometers × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 nanometer equals 1e-9 base units, and 1 micrometer equals 0.000001 base units, so dividing one by the other gives the direct nanometer-to-micrometer factor of 0.001.
Simple example
1 nm × 0.001 = 0.001 um
1 nanometer = 0.001 micrometers.
Real-world example
10 nm × 0.001 = 0.01 um
10 nanometers = 0.01 micrometers.
Conversion table
| Nanometer (nm) | Micrometer (um) |
|---|---|
| 0.001 nm | 0.000001 um |
| 0.01 nm | 0.00001 um |
| 1 nm | 0.001 um |
| 10 nm | 0.01 um |
| 100 nm | 0.1 um |
| 1,000 nm | 1 um |
Reverse conversion: Micrometer to Nanometer
0.001 um × 1000 = 1 nm
0.001 micrometers = 1 nanometer.
nanometers = micrometers × 1000
For a page dedicated to this direction, see Micrometer to Nanometer.
Understanding the Nanometer (nm)
Nanometer is 1e-9 meter units.
Understanding the Micrometer (um)
Micrometer is 0.000001 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrometers are in 1 nanometer?
1 nanometer equals 0.001 micrometers, using the exact defined conversion factor rather than an estimate.
How do I convert nanometer to micrometer?
Multiply the nanometer value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert micrometer back to nanometer?
Use the reverse factor: 1 micrometer equals 1,000 nanometers. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanometer?
Nanometer (nm) is a unit of scientific units.
What is a micrometer?
Micrometer (um) is a unit of scientific units.
Is the nanometer to micrometer conversion exact?
Yes. Both nanometer and micrometer are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.
Why does this category span everything from atomic to astronomical scales?
Scientific work spans an enormous range of physical scales, from atomic distances (measured in angstroms or atomic mass units) to interstellar distances (measured in astronomical units or parsecs), so this category groups SI-derived and scale-specific units that researchers commonly need to convert between within their field.