Convert between nanometers (nm) and meters (m) for length measurements. Perfect for science, nanotechnology, engineering, and microscopic scale calculations.
Conversion Factor:
1 Meter (m) = 1,000,000,000 Nanometers (nm) | 1 Nanometer (nm) = 0.000000001 Meters (m)
m = nm × 10⁻⁹ | nm = m × 10⁹ (or m = nm ÷ 1,000,000,000)
Accepts decimal values (e.g., 1,000,000 nm = 0.001 m)
Display format:
Quick conversions - click to auto-fill:
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Two metric units of length for vastly different scales—microscopic and everyday measurements
Typical lengths in both units for practical context:
| Object/Application | Nanometers (nm) | Meters (m) |
|---|---|---|
| Hydrogen atom diameter | 0.1 nm | 1e-10 m |
| DNA double helix width | 2 nm | 2e-9 m |
| Red blood cell diameter | 7,000–8,000 nm | 7e-6 – 8e-6 m |
| Human hair diameter | 50,000–100,000 nm | 5e-5 – 1e-4 m |
| Standard pencil length | 1.7e11 nm | 0.17 m |
Common length conversions for science, nanotechnology, and engineering use
| Nanometers (nm) | = | Meters (m) | Practical Context |
|---|---|---|---|
| 1 nm | = | 1e-9 m | Atomic scale |
| 100 nm | = | 1e-7 m | Nanoparticle size |
| 1,000 nm | = | 1e-6 m (1 μm) | Bacteria size |
| 100,000 nm | = | 1e-4 m (0.1 mm) | Fine dust particle |
| 1,000,000 nm | = | 0.001 m (1 mm) | Pinhead diameter |
| 100,000,000 nm | = | 0.1 m | Adult fingernail length |
| 1,000,000,000 nm | = | 1 m | Basic conversion reference |
Conversion factor: 1 nanometer = 10⁻⁹ meters (exact) | 1 meter = 10⁹ nanometers (exact)
Common questions about nanometer and meter measurements
To convert nanometers to meters, use the exact metric conversion factor (1 nm = 10⁻⁹ m):
meters = nanometers × 10⁻⁹ (or meters = nanometers ÷ 1,000,000,000)
For example, to convert 500,000,000 nanometers to meters:
500,000,000 nm × 10⁻⁹ = 0.5 m (or 500,000,000 ÷ 1e9 = 0.5 m)
This factor is defined by the metric system, so results are 100% precise.
Conversions between nanometers and meters are common in these scenarios:
Scientific notation simplifies working with the extreme scale difference between nanometers and meters:
The converter defaults to scientific notation for readability, but decimal format is also available.
Nanometers fit into the metric length hierarchy as a very small unit:
1 meter (m) = 100 centimeters (cm) = 1,000 millimeters (mm)
1 millimeter (mm) = 1,000 micrometers (μm) = 1e6 nanometers (nm)
1 micrometer (μm) = 1,000 nanometers (nm) = 1e-6 meters (m)
1 nanometer (nm) = 1e-3 micrometers (μm) = 1e-6 millimeters (mm) = 1e-9 meters (m)
This chain makes it easy to convert between nanometers and larger metric units (e.g., nm → μm → mm → m).
Yes, the conversion factor between nanometers and meters is exact. Here’s why:
Whether you use 10⁻⁹, 1/1e9, or 0.000000001 as the factor, the result will be mathematically precise.
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