Nanometer is 1e-9 meter units.
Nanometers to Zeptometers Converter — nm to zm
Convert Nanometer (nm) to Zeptometer (zm) using the exact conversion factor (1 nanometer = 1e+12 zeptometer). See the formula, worked examples, and conversion table.
Nanometers to Zeptometers converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
Zeptometer is 1e-21 meter units.
Result = input x 1e-9 / 1e-21.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nanometers to Zeptometers
Nanometer and Zeptometer both measure length. Specifically: Nanometer is 1e-9 meter units, and zeptometer is 1e-21 meter units.
Formula
zeptometers = nanometers × 1e+12
This factor comes from each unit's defined relationship to the category's base unit: 1 nanometer equals 1e-9 base units, and 1 zeptometer equals 1e-21 base units, so dividing one by the other gives the direct nanometer-to-zeptometer factor of 1e+12.
Simple example
1 nm × 1e+12 = 1e+12 zm
1 nanometer = 1e+12 zeptometers.
Real-world example
10 nm × 1e+12 = 1e+13 zm
10 nanometers = 1e+13 zeptometers.
Conversion table
| Nanometer (nm) | Zeptometer (zm) |
|---|---|
| 1 nm | 1e+12 zm |
| 5 nm | 5e+12 zm |
| 10 nm | 1e+13 zm |
| 21.0975 nm | 2.10975e+13 zm |
| 42.195 nm | 4.2195e+13 zm |
| 100 nm | 1e+14 zm |
Reverse conversion: Zeptometer to Nanometer
1e+12 zm × 1e-12 = 1 nm
1e+12 zeptometers = 1 nanometers.
nanometers = zeptometers × 1e-12
For a page dedicated to this direction, see Zeptometer to Nanometer.
Understanding the Nanometer (nm)
Nanometer is 1e-9 meter units.
Understanding the Zeptometer (zm)
Zeptometer is 1e-21 meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zeptometers are in 1 nanometer?
1 nanometer equals 1e+12 zeptometers, using the exact defined conversion factor rather than an estimate.
How do I convert nanometer to zeptometer?
Multiply the nanometer value by 1e+12. The converter above does this instantly to whatever precision you set.
How do I convert zeptometer back to nanometer?
Use the reverse factor: 1 zeptometer equals 1e-12 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 length.
What is a zeptometer?
Zeptometer (zm) is a unit of length.
Is the nanometer to zeptometer conversion exact?
Yes. Both nanometer and zeptometer are defined by fixed standards rather than physical artifacts, so the factor of 1e+12 used above is exact to as many digits as you choose to display.