Use this free mW/cm² to W/m² converter to change milliwatts per square centimeter into watts per square meter. The rule is simple: 1 mW/cm² = 10 W/m². Multiply any mW/cm² value by 10 to get W/m². The calculator is useful for irradiance, power density, solar energy, optics, laser, and UV curing measurements.
mW/cm² to W/m² Converter
Convert W/m² to mW/cm²
How to Convert mW/cm² to W/m²
To convert milliwatts per square centimeter (mW/cm²) to watts per square meter (W/m²), follow these steps:
Step 1: Understand the unit conversion factors
- 1 mW = 0.001 W
- 1 cm² = 0.0001 m²
Step 2: Derive the conversion formula
Since we're converting mW/cm² to W/m², we need to:
- Convert mW to W by multiplying by 0.001
- Convert cm² to m² by dividing by 0.0001
This gives us: mW/cm² × (0.001 W/mW) × (1/0.0001 m²/cm²) = mW/cm² × 10
Therefore, to convert from mW/cm² to W/m², multiply the value by 10.
Examples:
- 10 mW/cm² = 10 × 10 = 100 W/m²
- 1 mW/cm² = 1 × 10 = 10 W/m²
- 5 mW/cm² = 5 × 10 = 50 W/m²
- 0.2 mW/cm² = 0.2 × 10 = 2 W/m²
mW/cm² to W/m² Conversion Table
| 100 mW/cm² to W/m² = 1,000 W/m² |
| 10 mW/cm² to W/m² = 100 W/m² |
| 200 mW/cm² to W/m² = 2,000 W/m² |
| 1 mW/cm² to W/m² = 10 W/m² |
| 2 mW/cm² to W/m² = 20 W/m² |
| 50 mW/cm² to W/m² = 500 W/m² |
| 400 mW/cm² to W/m² = 4,000 W/m² |
| 1,000 mW/cm² to W/m² = 10,000 W/m² |
| 500 mW/cm² to W/m² = 5,000 W/m² |
| 700 mW/cm² to W/m² = 7,000 W/m² |
| 150 mW/cm² to W/m² = 1,500 W/m² |
| 5 mW/cm² to W/m² = 50 W/m² |
| 3 mW/cm² to W/m² = 30 W/m² |
| 8 mW/cm² to W/m² = 80 W/m² |
| 20,000 mW/cm² to W/m² = 200,000 W/m² |
| 0.5 mW/cm² to W/m² = 5 W/m² |
| 6 mW/cm² to W/m² = 60 W/m² |
| 7 mW/cm² to W/m² = 70 W/m² |
| 11 mW/cm² to W/m² = 110 W/m² |
| 16 mW/cm² to W/m² = 160 W/m² |
| 19 mW/cm² to W/m² = 190 W/m² |
| 21 mW/cm² to W/m² = 210 W/m² |
| 25 mW/cm² to W/m² = 250 W/m² |
Also see: Watts to MegaWatts Calculator
Where mW/cm² and W/m² Are Used
- Solar energy: Standard full sunlight (1 sun) is about 1,000 W/m², which equals 100 mW/cm². Solar panels are rated under this standard test condition.
- Lasers and optics: Beam intensity and power density are often given in mW/cm², while safety standards may use W/m².
- UV curing and sterilization: UV lamps and sensors usually report irradiance in mW/cm².
- Photobiology and phototherapy: Light dose is calculated from irradiance in mW/cm² multiplied by exposure time.
- Meteorology and radiometry: Radiative flux is usually reported in W/m².
Frequently Asked Questions
How do you convert mW/cm² to W/m²?
Multiply the value in mW/cm² by 10. For example, 25 mW/cm² × 10 = 250 W/m².
How many W/m² are in 1 mW/cm²?
1 mW/cm² equals 10 W/m².
What is 100 mW/cm² in W/m²?
100 mW/cm² equals 1,000 W/m², the standard intensity of full sunlight.
Why is the conversion factor 10?
A square meter is 10,000 times larger than a square centimeter, and a watt is 1,000 times larger than a milliwatt. Dividing 10,000 by 1,000 gives 10.
How do you convert W/m² to mW/cm²?
Divide the W/m² value by 10.
Is mW/cm² the same as irradiance?
Yes. Both mW/cm² and W/m² measure irradiance, the radiant power received per unit area.