Convert Nanometers to Millimeters
1 nanometer (nm) equals 0.000001 millimeters (mm).
1 nm = 0.000001 mm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk nanometer to millimeter converter to paste a column from Excel.
How to Convert Nanometer to Millimeter
- 1 nm = 0.000001 mm
- 1 mm = 1000000 nm
- Example: convert 15 nm to mm: 15 nm = 15 × 0.000001 mm = 0.000015 mm
Formula
mm = nm ÷ 1000000
Derivation from SI units:
- 1 nm = 10⁻⁹ m
- 1 mm = 10⁻³ m
- 1 nm = 1 × 10⁻⁹ m ÷ 0.001 m per mm = 0.000001 mm
Both units are defined exactly, so the factor is exact. Nanometer definition: nanometer; Millimeter definition: millimeter.
Worked examples
- A reading of 20 nm converts to 0.00002 mm.
20 nm × 0.000001 = 0.00002 mm - A value of 500 nm is 0.0005 mm.
500 nm × 0.000001 = 0.0005 mm
Nanometer to Millimeter conversion table
| Nanometers (nm) | Millimeters (mm) |
|---|---|
| 0.1 nm | 1 × 10⁻⁷ mm |
| 1 nm | 0.000001 mm |
| 2 nm | 0.000002 mm |
| 5 nm | 0.000005 mm |
| 10 nm | 0.00001 mm |
| 20 nm | 0.00002 mm |
| 50 nm | 0.00005 mm |
| 100 nm | 0.0001 mm |
| 200 nm | 0.0002 mm |
| 380 nm | 0.00038 mm |
| 450 nm | 0.00045 mm |
| 500 nm | 0.0005 mm |
| 550 nm | 0.00055 mm |
| 650 nm | 0.00065 mm |
| 700 nm | 0.0007 mm |
| 780 nm | 0.00078 mm |
| 1000 nm | 0.001 mm |
Where it's used
Nanometers are used for wavelengths of light (UV, visible, near-IR), while millimeters appear in engineering drawings and machining tolerances. Both measure length and distance, so the conversion is a fixed factor.
Nanometer to other length units
| Conversion | 1 nm equals |
|---|---|
| nanometer to meter | 1 × 10⁻⁹ m |
| nanometer to kilometer | 1 × 10⁻¹² km |
| nanometer to centimeter | 1 × 10⁻⁷ cm |
| nanometer to millimeter | 0.000001 mm |
| nanometer to micrometer | 0.001 µm |
| nanometer to angstrom | 10 Å |
| nanometer to mile | 6.213711922 × 10⁻¹³ mi |
| nanometer to yard | 1.093613298 × 10⁻⁹ yd |
| nanometer to foot | 3.280839895 × 10⁻⁹ ft |
| nanometer to inch | 3.937007874 × 10⁻⁸ in |
| nanometer to mil | 0.00003937007874 mil |
| nanometer to nautical mile | 5.399568035 × 10⁻¹³ nmi |
Frequently asked questions
How many millimeters are in 1 nanometer?
1 nm = 0.000001 mm.
How do I convert nanometers to millimeters?
Multiply the value in nm by 0.000001, or divide it by 1000000. For example, 15 nm × 0.000001 = 0.000015 mm.
Is the nm to mm conversion exact?
Yes. Both units are defined exactly, and 1 nm is exactly 0.000001 mm.
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 Nanometers to Millimeters. Retrieved October 17, 2026, from https://scientificconverters.com/length/nanometers-to-millimeters/
IEEE
Scientific Converters, "Convert Nanometers to Millimeters," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/nanometers-to-millimeters/