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Power converter

nanowatt to milliwatt

Convert nanowatt (nW) to milliwatt (mW). Use an editable power converter, conversion formula, and reference table.

0.000001

1 nW = 0.000001 mW

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Conversion formula

mW = nW × 0.000001

One nanowatt equals 0.000001 milliwatt. Multiply your value in nanowatt by this factor to get milliwatt. For the reverse conversion, divide by the same factor.

Worked example

To convert 5 nanowatt:
5 × 0.000001 = 0.000005 mW

Conversion table

nanowatt (nW)milliwatt (mW)
0.011e-8
0.11e-7
10.000001
20.000002
50.000005
100.00001
250.000025
500.00005
1000.0001
10000.001

About these measurements

Power is the rate of energy transfer.

The base reference used here is the watt. One nanowatt is 1e-9 base units; one milliwatt is 0.001 base units.

Important distinctions

Mechanical horsepower and metric horsepower are distinct units.

Precision

The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.

Common questions

How do I convert nW to mW?

Multiply the quantity in nW by 0.000001. You can also type the value into the converter above.

Can I reverse the conversion?

Yes. Use the swap button or open the milliwatt to nanowatt converter.

Reference

NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.

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