Convert Micrometers to Nanometers
1 micrometer (µm) equals 1000 nanometers (nm).
1 µm = 1000 nm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk micrometer to nanometer converter to paste a column from Excel.
How to Convert Micrometer to Nanometer
- 1 µm = 1000 nm
- 1 nm = 0.001 µm
- Example: convert 15 µm to nm: 15 µm = 15 × 1000 nm = 15000 nm
Formula
nm = µm × 1000
Derivation from SI units:
- 1 µm = 10⁻⁶ m
- 1 nm = 10⁻⁹ m
- 1 µm = 0.000001 m ÷ 1 × 10⁻⁹ m per nm = 1000 nm
Both units are defined exactly, so the factor is exact. Micrometer definition: micrometer; Nanometer definition: nanometer.
Worked examples
- A reading of 5 µm converts to 5000 nm.
5 µm × 1000 = 5000 nm - A value of 75 µm is 75000 nm.
75 µm × 1000 = 75000 nm
Micrometer to Nanometer conversion table
| Micrometers (µm) | Nanometers (nm) |
|---|---|
| 0.1 µm | 100 nm |
| 0.3 µm | 300 nm |
| 0.5 µm | 500 nm |
| 1 µm | 1000 nm |
| 2.5 µm | 2500 nm |
| 5 µm | 5000 nm |
| 10 µm | 10000 nm |
| 20 µm | 20000 nm |
| 25 µm | 25000 nm |
| 50 µm | 50000 nm |
| 75 µm | 75000 nm |
| 100 µm | 100000 nm |
| 150 µm | 150000 nm |
| 200 µm | 200000 nm |
| 500 µm | 500000 nm |
| 1000 µm | 1000000 nm |
Where it's used
Micrometers are used for particle and filter ratings (PM2.5, PM10, HEPA tested at 0.3 µm), while nanometers appear in wavelengths of light (UV, visible, near-IR). Both measure length and distance, so the conversion is a fixed factor.
Micrometer to other length units
| Conversion | 1 µm equals |
|---|---|
| micrometer to meter | 0.000001 m |
| micrometer to kilometer | 1 × 10⁻⁹ km |
| micrometer to centimeter | 0.0001 cm |
| micrometer to millimeter | 0.001 mm |
| micrometer to nanometer | 1000 nm |
| micrometer to angstrom | 10000 Å |
| micrometer to mile | 6.213711922 × 10⁻¹⁰ mi |
| micrometer to yard | 0.000001093613298 yd |
| micrometer to foot | 0.000003280839895 ft |
| micrometer to inch | 0.00003937007874 in |
| micrometer to mil | 0.03937007874 mil |
| micrometer to nautical mile | 5.399568035 × 10⁻¹⁰ nmi |
Frequently asked questions
How many nanometers are in 1 micrometer?
1 µm = 1000 nm.
How do I convert micrometers to nanometers?
Multiply the value in µm by 1000. For example, 15 µm × 1000 = 15000 nm.
Is the µm to nm conversion exact?
Yes. Both units are defined exactly, and 1 µm is exactly 1000 nm.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Micrometers to Nanometers. Retrieved October 17, 2026, from https://scientificconverters.com/length/micrometers-to-nanometers/
IEEE
Scientific Converters, "Convert Micrometers to Nanometers," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/micrometers-to-nanometers/