Millimeters to Nanometers Converter

Enter the length in millimeters below to get the value converted to nanometers.


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Result in Nanometers:

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1 mm = 1,000,000 nm

Do you want to convert nanometers to millimeters?

How to Convert Millimeters to Nanometers

To convert a measurement in millimeters to a measurement in nanometers, multiply the length by the following conversion ratio: 1,000,000 nanometers/millimeter.

Since one millimeter is equal to 1,000,000 nanometers, you can use this simple formula to convert:

nanometers = millimeters × 1,000,000

The length in nanometers is equal to the length in millimeters multiplied by 1,000,000.

For example, here's how to convert 5 millimeters to nanometers using the formula above.
nanometers = (5 mm × 1,000,000) = 5,000,000 nm
conversion scale showing millimeters and equivalent nanometers length values

How Many Nanometers Are in a Millimeter?

There are 1,000,000 nanometers in a millimeter, which is why we use this value in the formula above.

1 mm = 1,000,000 nm

Our inch fraction calculator can add millimeters and nanometers together, and it also automatically converts the results to US customary, imperial, and SI metric values.

Millimeters and nanometers are both units used to measure length. Keep reading to learn more about each unit of measure.

What Is a Millimeter?

One millimeter is equal to one-thousandth (1/1,000) of a meter, which is defined as the distance light travels in a vacuum in 1/299,792,458 of a second. One millimeter is equal to 0.0393701 inches.

The millimeter, or millimetre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "milli" is the prefix for thousandths, or 10-3. Millimeters can be abbreviated as mm; for example, 1 millimeter can be written as 1 mm.

Millimeters are often represented by the smallest ticks on most metric rulers. To get a reference point of the size, the thickness of a US dime is 1.35mm.[1]

Learn more about millimeters.

What Is a Nanometer?

One nanometer is equal to one-billionth (1/1,000,000,000) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval.

The nanometer, or nanometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "nano" is the prefix for billionths, or 10-9. Nanometers can be abbreviated as nm; for example, 1 nanometer can be written as 1 nm.

The nanometer is an extremely small unit of length measurement, often used to measure things that are very small, such as the transistors and electrical pathways in computer processors and nanotechnology.

Learn more about nanometers.

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or a combination of both values, so make sure you get the correct type for your needs.

Need a ruler? Try our free downloadable and printable rulers, which include both imperial and metric measurements.

Millimeter to Nanometer Conversion Table

Table showing various millimeter measurements converted to nanometers.
Millimeters Nanometers
0.000001 mm 1 nm
0.000002 mm 2 nm
0.000003 mm 3 nm
0.000004 mm 4 nm
0.000005 mm 5 nm
0.000006 mm 6 nm
0.000007 mm 7 nm
0.000008 mm 8 nm
0.000009 mm 9 nm
0.0000001 mm 0.1 nm
0.000001 mm 1 nm
0.00001 mm 10 nm
0.0001 mm 100 nm
0.001 mm 1,000 nm
0.01 mm 10,000 nm
0.1 mm 100,000 nm
1 mm 1,000,000 nm


  1. United States Mint, Coin Specifications,

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