Centimeters to Nanometers
Convert centimeters to nanometers instantly — one centimeter is 1e+07 nanometers.
| Centimeters | Nanometers |
|---|---|
| 1 cm | 10000000 nm |
| 2 cm | 20000000 nm |
| 3 cm | 30000000 nm |
| 5 cm | 50000000 nm |
| 10 cm | 100000000 nm |
| 25 cm | 250000000 nm |
| 50 cm | 500000000 nm |
| 100 cm | 1000000000 nm |
How to use
- Enter a value in the Centimeters field.
- The Nanometers figure appears immediately — no button to press.
- Typing in the Nanometers field converts back to Centimeters the same way.
- Use the reference table for the values that come up most often.
Centimeters to Nanometers formula
Converting centimeters to nanometers is a single multiplication by 10000000.
nm = cm × 10000000
Why this factor: the centimeter and the nanometer are both defined against the meter, so dividing one definition by the other gives 10000000 directly. Both definitions are set out in full below.
To go the other way, divide by 10000000 — or use the Nanometers to Centimeters converter, which is the same calculation reversed.
Worked example
Take 12 cm and multiply by the factor 10000000: the result is 120000000 nm.
12 cm × 10000000 = 120000000 nm
The converter above does this for any value you type, in either direction.
What is a centimeter?
A centimeter is one hundredth of a meter, the everyday metric unit for body and object measurements.
Definition: Exactly 0.01 meter by SI prefix definition.
Where it is used: Height, clothing sizes, rainfall, paper and screen dimensions across the metric world.
What is a nanometer?
A nanometer is one billionth of a meter — the scale of molecules and visible light wavelengths.
Definition: Exactly 1×10⁻⁹ meter by SI prefix definition.
Where it is used: Semiconductor process nodes, optical coatings, and wavelengths (visible light is roughly 380–750 nm).
Centimeters vs Nanometers
The centimeter and the nanometer belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many nanometers are in a centimeter?
One centimeter equals 10000000 nanometers.
What is the formula to convert centimeters to nanometers?
Multiply the number of centimeters by 10000000. To reverse it, divide by 10000000 instead.
How do I convert nanometers back to centimeters?
Divide by 10000000, which is the same as multiplying by 1e-07.
How many nanometers are in 10 centimeters?
10 cm works out to 100000000 nm.
How is the centimeter defined?
Exactly 0.01 meter by SI prefix definition.