Millijoules per square centimeter to joules per square meter
Type a value in mJ/cm² to get it in J/m² instantly.
400J/m²
That's about the same as a UV water disinfection dose. A 1 mW/cm² source would need about 40 seconds to deliver it.
Convert the other way: J/m² to mJ/cm²
What it means
How big a dose is that?
Fluence is energy per area. Irradiance — watts per square meter — is the rate; multiply by the exposure time to get fluence.
The math
How to convert mJ/cm² to J/m²
To convert millijoules per square centimeter to joules per square meter, multiply by 10.
Example: 40 mJ/cm² × 10 = 400 J/m².
In the other direction, 1 J/m² = 0.1 mJ/cm².
Every unit
Your dose in every unit
Tables
mJ/cm² to J/m² conversion table
| mJ/cm² | J/m² |
|---|---|
| 0.1 mJ/cm² | 1 J/m² |
| 1 mJ/cm² | 10 J/m² |
| 5 mJ/cm² | 50 J/m² |
| 10 mJ/cm² | 100 J/m² |
| 25 mJ/cm² | 250 J/m² |
| 40 mJ/cm² | 400 J/m² |
| 100 mJ/cm² | 1,000 J/m² |
| 250 mJ/cm² | 2,500 J/m² |
| 500 mJ/cm² | 5,000 J/m² |
| 1,000 mJ/cm² | 10,000 J/m² |
| 5,000 mJ/cm² | 50,000 J/m² |
J/m² to mJ/cm² conversion table
| J/m² | mJ/cm² |
|---|---|
| 0.1 J/m² | 0.01 mJ/cm² |
| 1 J/m² | 0.1 mJ/cm² |
| 5 J/m² | 0.5 mJ/cm² |
| 10 J/m² | 1 mJ/cm² |
| 25 J/m² | 2.5 mJ/cm² |
| 40 J/m² | 4 mJ/cm² |
| 100 J/m² | 10 mJ/cm² |
| 250 J/m² | 25 mJ/cm² |
| 500 J/m² | 50 mJ/cm² |
| 1,000 J/m² | 100 mJ/cm² |
| 5,000 J/m² | 500 mJ/cm² |
Quick answers
Quick answers
- How many J/m² is 1 mJ/cm²?
- 1 mJ/cm² is 10 J/m².
- How many J/m² is 10 mJ/cm²?
- 10 mJ/cm² is 100 J/m².
- How many J/m² is 40 mJ/cm²?
- 40 mJ/cm² is 400 J/m².
The units
About these units
Millijoules per square centimeter (mJ/cm²)
The standard for UV dose and laser fluence.
Joules per square meter (J/m²)
The SI form, ten times the mJ/cm² figure.
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