Milliwatts Conversion

The milliwatt is a unit used to measure power. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about milliwatts.

Milliwatt Conversion Calculators

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Milliwatt Definition and Usage

One milliwatt is the power equal to 1/1,000 of a watt, or the energy consumption at a rate of 1/1,000 of a joule per second.

The milliwatt is a multiple of the watt, which is the SI derived unit for power. In the metric system, "milli" is the prefix for 10-3. Milliwatts can be abbreviated as mW, for example 1 milliwatt can be written as 1 mW.

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Milliwatts Measurement Conversion Table

Milliwatts and the equivalent power measurements
milliwatts watts microwatts kilowatts megawatts horsepower btu per hour kilocalories per hour
1 mW 0.001 W 1,000 µW 0.000001 kW 0.000000001 MW 0.000001341 hp 0.003412 Btu/h 0.00086 kcal/h
2 mW 0.002 W 2,000 µW 0.000002 kW 0.000000002 MW 0.000002682 hp 0.006824 Btu/h 0.001721 kcal/h
3 mW 0.003 W 3,000 µW 0.000003 kW 0.000000003 MW 0.0000040231 hp 0.010236 Btu/h 0.002581 kcal/h
4 mW 0.004 W 4,000 µW 0.000004 kW 0.000000004 MW 0.0000053641 hp 0.013649 Btu/h 0.003442 kcal/h
5 mW 0.005 W 5,000 µW 0.000005 kW 0.000000005 MW 0.0000067051 hp 0.017061 Btu/h 0.004302 kcal/h
6 mW 0.006 W 6,000 µW 0.000006 kW 0.000000006 MW 0.0000080461 hp 0.020473 Btu/h 0.005163 kcal/h
7 mW 0.007 W 7,000 µW 0.000007 kW 0.000000007 MW 0.0000093872 hp 0.023885 Btu/h 0.006023 kcal/h
8 mW 0.008 W 8,000 µW 0.000008 kW 0.000000008 MW 0.000010728 hp 0.027297 Btu/h 0.006883 kcal/h
9 mW 0.009 W 9,000 µW 0.000009 kW 0.000000009 MW 0.000012069 hp 0.030709 Btu/h 0.007744 kcal/h
10 mW 0.01 W 10,000 µW 0.00001 kW 0.00000001 MW 0.00001341 hp 0.034121 Btu/h 0.008604 kcal/h
11 mW 0.011 W 11,000 µW 0.000011 kW 0.000000011 MW 0.000014751 hp 0.037534 Btu/h 0.009465 kcal/h
12 mW 0.012 W 12,000 µW 0.000012 kW 0.000000012 MW 0.000016092 hp 0.040946 Btu/h 0.010325 kcal/h
13 mW 0.013 W 13,000 µW 0.000013 kW 0.000000013 MW 0.000017433 hp 0.044358 Btu/h 0.011185 kcal/h
14 mW 0.014 W 14,000 µW 0.000014 kW 0.000000014 MW 0.000018774 hp 0.04777 Btu/h 0.012046 kcal/h
15 mW 0.015 W 15,000 µW 0.000015 kW 0.000000015 MW 0.000020115 hp 0.051182 Btu/h 0.012906 kcal/h
16 mW 0.016 W 16,000 µW 0.000016 kW 0.000000016 MW 0.000021456 hp 0.054594 Btu/h 0.013767 kcal/h
17 mW 0.017 W 17,000 µW 0.000017 kW 0.000000017 MW 0.000022797 hp 0.058006 Btu/h 0.014627 kcal/h
18 mW 0.018 W 18,000 µW 0.000018 kW 0.000000018 MW 0.000024138 hp 0.061419 Btu/h 0.015488 kcal/h
19 mW 0.019 W 19,000 µW 0.000019 kW 0.000000019 MW 0.000025479 hp 0.064831 Btu/h 0.016348 kcal/h
20 mW 0.02 W 20,000 µW 0.00002 kW 0.00000002 MW 0.00002682 hp 0.068243 Btu/h 0.017208 kcal/h

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