Nanometers to Mils Converter
Enter the length in nanometers below to convert it to mils.
Convert Nanometers to Mils
Enter a value in nanometers (nm) to convert to mils (mil).
Nanometers to Mils Conversion Chart (1–40 Continuous)
Continuous 1 to 40 nanometers lookup table with exact decimals and reduced nearest 1/64 fractions. Highlighted rows mark common shop and ruler values.
| Nanometers (nm) | Decimal (mil) | Fraction — Nearest 1/64 (Reduced) | Nearest 1/16 (Tape) |
|---|---|---|---|
1 nm★ Common | 0.000039 mil | 0 mil | 0 mil |
2 nm★ Common | 0.000079 mil | 0 mil | 0 mil |
3 nm★ Common | 0.000118 mil | 0 mil | 0 mil |
4 nm | 0.000157 mil | 0 mil | 0 mil |
5 nm★ Common | 0.000197 mil | 0 mil | 0 mil |
6 nm★ Common | 0.000236 mil | 0 mil | 0 mil |
7 nm | 0.000276 mil | 0 mil | 0 mil |
8 nm★ Common | 0.000315 mil | 0 mil | 0 mil |
9 nm | 0.000354 mil | 0 mil | 0 mil |
10 nm★ Common | 0.000394 mil | 0 mil | 0 mil |
11 nm | 0.000433 mil | 0 mil | 0 mil |
12 nm★ Common | 0.000472 mil | 0 mil | 0 mil |
How to Convert Nanometers to Mils
To convert nanometers to mils, multiply the length by the following conversion ratio: 0.00003937 mils/nanometer.
Since one nanometer is equal to 0.00003937 mils, you can use this simple formula to convert:
The length in mils is equal to the length in nanometers multiplied by 0.00003937.
For example, here's how to convert 5 nanometers to mils using the formula above.
How Many Mils Are in a Nanometer?
There are 0.00003937 mils in a nanometer, which is why we use this value in the formula above.
Our nanometer fraction and decimal calculator can convert nanometers and mils, and it automatically converts the results to US customary, imperial, and SI metric values.
Nanometers and mils are both units used to measure length. Keep reading to learn more about each unit.
How to Convert Nanometers to Fractional Inches (1/16″, 1/32″ & 1/64″)
Plain-language method for turning decimal inches into a standard tape-measure or machinist ruler fraction
Calculators give you a decimal number (such as 0 in), but tape measures and woodworking rulers are marked in binary fractions of an inch—most commonly 1/16″ on carpenter tapes, 1/32″ on fine woodworking rules, and 1/64″ on machinist scales.
Here is the step-by-step worked example for converting 5 nanometers (nm) into fractional inches:
- Find the decimal inches result: Convert 5 nm to inches to get 0 in.
- Separate the whole inches from the decimal part: Keep the whole number 0 aside, leaving the decimal remainder 0.
- Multiply the decimal part by your desired fraction denominator (16, 32, or 64) and round half up: Multiply 0 by 16, 32, or 64, then round to the nearest whole number (values ending in .5 round up).
- Reduce the fraction to lowest terms: If the rounded top number (numerator) is even, divide both top and bottom by 2 (or their Greatest Common Divisor) until the top number is odd, then combine with your whole inches.
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. [1]
The nanometer, or nanometre, is a multiple of the meter, 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.
Because 1 inch equals 25.4 millimeters and 1 millimeter equals 1,000,000 nanometers, there are exactly 25,400,000 nanometers in 1 inch (and 10 Angstroms in 1 nanometer).
The nanometer is an extremely small unit of length measurement, often used to measure things that are very small, such as the wavelengths of visible light (400 nm to 700 nm), the transistors and electrical pathways in computer processors, and thin-film nanotechnology.
What Is a Mil?
A mil is a unit of length equal to 0.0000254 meters (m), the base unit for length. One thousandth of an inch (0.001 in = 0.0254 mm), used in manufacturing tolerances and film thickness. [2]
The mil is classified as a US customary and imperial unit of length. Mils can be abbreviated as mil; for example, 1 mil can be written as 1 mil.
When working with mils (mil) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, mils (mil) are widely used across fine-tolerance laboratory, analytical, and micro-scale length measurements within US customary and imperial workflows, engineering documentation, and technical data sheets.
When converting length between nanometers (nm) and mils (mil), keep full floating-point precision (1 nm = 0.00003937 mil; 1 mil = 25,400 nm) during intermediate calculations and round only the final mil figure to match your instrument tolerance.
More Nanometer & Mil Conversions
Need to calculate in the opposite direction? Use our mils to nanometers calculator to switch your starting unit immediately. You can also explore related tools such as converting mils to nanometers, converting millimeters to mils, or converting nanometers to inches.
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Length Metrology Standard — Nanometers (nm) to Mils (mil)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Nanometer (nm) & Mil (Thou) (mil)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (nm to mil)