Convert Millimeters to Nanometers
1 millimeter (mm) equals 1000000 nanometers (nm).
1 mm = 1000000 nm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millimeter to nanometer converter to paste a column from Excel.
How to Convert Millimeter to Nanometer
- 1 mm = 1000000 nm
- 1 nm = 0.000001 mm
- Example: convert 15 mm to nm: 15 mm = 15 × 1000000 nm = 15000000 nm
Formula
nm = mm × 1000000
Derivation from SI units:
- 1 mm = 10⁻³ m
- 1 nm = 10⁻⁹ m
- 1 mm = 0.001 m ÷ 1 × 10⁻⁹ m per nm = 1000000 nm
Both units are defined exactly, so the factor is exact. Millimeter definition: millimeter; Nanometer definition: nanometer.
Worked examples
- A reading of 8 mm converts to 8000000 nm.
8 mm × 1000000 = 8000000 nm - A value of 30 mm is 30000000 nm.
30 mm × 1000000 = 30000000 nm
Millimeter to Nanometer conversion table
| Millimeters (mm) | Nanometers (nm) |
|---|---|
| 0.1 mm | 100000 nm |
| 0.5 mm | 500000 nm |
| 1 mm | 1000000 nm |
| 2 mm | 2000000 nm |
| 3 mm | 3000000 nm |
| 5 mm | 5000000 nm |
| 6 mm | 6000000 nm |
| 8 mm | 8000000 nm |
| 10 mm | 10000000 nm |
| 12 mm | 12000000 nm |
| 15 mm | 15000000 nm |
| 16 mm | 16000000 nm |
| 20 mm | 20000000 nm |
| 25 mm | 25000000 nm |
| 25.4 mm | 25400000 nm |
| 30 mm | 30000000 nm |
| 50 mm | 50000000 nm |
| 75 mm | 75000000 nm |
| 100 mm | 100000000 nm |
| 150 mm | 150000000 nm |
| 300 mm | 300000000 nm |
| 500 mm | 500000000 nm |
| 1000 mm | 1000000000 nm |
Where it's used
Millimeters are used for engineering drawings and machining tolerances, while nanometers appear in wavelengths of light (UV, visible, near-IR). Both measure length and distance, so the conversion is a fixed factor.
Millimeter to other length units
| Conversion | 1 mm equals |
|---|---|
| millimeter to meter | 0.001 m |
| millimeter to kilometer | 0.000001 km |
| millimeter to centimeter | 0.1 cm |
| millimeter to micrometer | 1000 µm |
| millimeter to nanometer | 1000000 nm |
| millimeter to angstrom | 10000000 Å |
| millimeter to mile | 6.213711922 × 10⁻⁷ mi |
| millimeter to yard | 0.001093613298 yd |
| millimeter to foot | 0.003280839895 ft |
| millimeter to inch | 0.03937007874 in |
| millimeter to mil | 39.37007874 mil |
| millimeter to nautical mile | 5.399568035 × 10⁻⁷ nmi |
Frequently asked questions
How many nanometers are in 1 millimeter?
1 mm = 1000000 nm.
How do I convert millimeters to nanometers?
Multiply the value in mm by 1000000. For example, 15 mm × 1000000 = 15000000 nm.
Is the mm to nm conversion exact?
Yes. Both units are defined exactly, and 1 mm is exactly 1000000 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 Millimeters to Nanometers. Retrieved October 17, 2026, from https://scientificconverters.com/length/millimeters-to-nanometers/
IEEE
Scientific Converters, "Convert Millimeters to Nanometers," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/millimeters-to-nanometers/