Convert microwatt to milliwatt
1 microwatt = 0.001 milliwatts
What is microwatt?
A microwatt is a unit of power equal to one millionth of a watt. It is used in ultra-low-power electronics, energy harvesting systems, biosensors, and precision scientific instrumentation.
Real-world uses
Microwatts measure the power of radio frequency (RF) signals received by antennas, ultra-low-power IoT sensors, cardiac pacemaker power consumption, and energy-harvesting devices. Satellite receivers may work with signals in the nanowatt to microwatt range. Wearable health monitors often operate at a few microwatts.
History
Microwatts became a meaningful engineering unit as semiconductor miniaturisation through the 1970s–2000s enabled ultra-low-power circuit design. The proliferation of wireless sensors, implantable medical devices, and battery-free energy harvesting systems in the early 21st century made µW-level power budgeting essential.
Common mistakes
Confusing microwatts (µW) with milliwatts (mW)—a difference of 1,000×. In RF engineering, power is often expressed in dBm (decibels relative to 1 mW), which requires knowing that 0 dBm = 1 mW = 1,000 µW, and negative dBm values correspond to sub-milliwatt levels.
What is milliwatt?
A milliwatt is a unit of power equal to one thousandth of a watt. It is used in low-power electronics, wireless communication systems, laser specifications, and medical device power ratings.
Real-world uses
Milliwatts measure the power of laser pointers (Class 1: <1 mW; Class 3B: up to 500 mW), Bluetooth radios (typically 1–100 mW), Wi-Fi transmitters, and fibre optic signals. They are used in optical communications, consumer electronics, and medical laser specifications.
History
Milliwatts became relevant as the miniaturisation era brought small electrical and optical devices into widespread use from the mid-20th century. Consumer electronics, telecommunications, and biomedical equipment all required power specifications at this sub-watt scale.
Common mistakes
Confusing milliwatts (mW) with microwatts (µW)—1 mW = 1,000 µW. Also, assuming all laser pointers operate at the same power level; safety regulations classify lasers by output power in mW, and even small increases can be hazardous to the eyes.
When is this conversion used?
Converting microwatt to milliwatt is useful in the power domain when comparing values across different measurement standards or applying formulas that require a specific unit.
Worked examples
1 microwatt = 0.001 milliwatts
1 milliwatt = 0.001 watts
How to convert microwatt to milliwatt
To convert microwatt to milliwatt, multiply the value by 0.001.
To convert milliwatt back to microwatt, multiply by 1,000.
Measurement standards
The watt is the SI derived unit of power, defined as one joule per second (kg·m²/s³). Horsepower remains in widespread informal use, particularly in the automotive industry, but has no single universal definition across regions.
Did you know?
The human body at rest produces about 80 watts of power — roughly enough to keep an incandescent light bulb glowing. During intense exercise, a trained cyclist can sustain over 400 watts, and elite sprinters briefly exceed 2,000 watts.
| microwatts | milliwatts |
|---|---|
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
Common values
| microwatts | milliwatts | |
|---|---|---|
| LED light bulb | 10,000,000 microwatts | 10,000 milliwatts |
| Desktop computer | 300,000,000 microwatts | 300,000 milliwatts |
| Microwave oven | 1.000000e+09 microwatts | 1,000,000 milliwatts |
| Small car engine | 7.500000e+10 microwatts | 75,000,000 milliwatts |
| Wind turbine (large) | 3.000000e+12 microwatts | 3.000000e+09 milliwatts |
Frequently asked questions
How many milliwatts are in 1 microwatt?
1 microwatt = 0.001 milliwatts.
How do you convert microwatt to milliwatt?
Multiply the microwatt value by 0.001 to get milliwatt.
What is 10 microwatts in milliwatts?
10 microwatts = 0.01 milliwatts.
How many microwatts are in 1 milliwatt?
1 milliwatt = 1,000 microwatts.
Available Power units
More microwatt conversions
- Convert microwatt to watt
- Convert microwatt to kilowatt
- Convert microwatt to horsepower (mechanical)
- Convert microwatt to megawatt
- Convert microwatt to gigawatt
- Convert microwatt to milliwatt
- Convert microwatt to BTU per hour
- Convert microwatt to kilocalorie per hour
- Convert microwatt to ton of refrigeration
Assumption: horsepower values use mechanical horsepower.