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How To Convert Nanometers to Meters

Worked Unit Conversion Example Problem

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Nanometers are used to express wavelength of light.

Nanometers are used to express wavelength of light.

John Lamb, Getty Images
This example problem demonstrates how to convert nanometers to meters.

Problem:

The most common wavelength of the red light from a helium-neon laser is 632.1 nanometers. What is the wavelength in meters?

Solution:

1 meter = 109 nanometers

Set up the conversion so the desired unit will be cancelled out. In this case, we want m to be the remaining unit.

distance in m = (distance in nm) x (1 m/109 nm)
Note: 1/109 = 10-9
distance in m = (632.1 x 10-9) m
distance in m = 6.321 x 10-7 m

Answer:

632.1 nanometers is equal to 6.321 x 10-7 meters.

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