Kilojoule per square meter (kJ/m²)
Exactly 1000 J/m².
What is a kilojoule per square meter?
- Symbol
- kJ/m²
- Quantity
- Heat Density
- Unit system
- SI
- Definition
- Exactly 1000 J/m².
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for solar radiation totals over short periods and for impact and fracture energy per area in materials testing.
Kilojoule per square meter in other heat density units
- 1 kJ/m² = 1000 J/m²Joule per square meter
- 1 kJ/m² = 0.001 MJ/m²Megajoule per square meter
- 1 kJ/m² ≈ 0.0002777777778 kWh/m²Kilowatt-hour per square meter
- 1 kJ/m² ≈ 0.08805509184 BTU/ft²Kilojoule per square meter to BTU per square foot converter
- 1 kJ/m² ≈ 0.02390057361 LyLangley
Kilojoule per square meter quick reference
| Kilojoule per square meter | BTU per square foot | Joule per square meter | Megajoule per square meter |
|---|---|---|---|
| 1 kJ/m² | ≈ 0.08805509184 BTU/ft² | = 1000 J/m² | = 0.001 MJ/m² |
| 10 kJ/m² | ≈ 0.8805509184 BTU/ft² | = 10000 J/m² | = 0.01 MJ/m² |
| 100 kJ/m² | ≈ 8.805509184 BTU/ft² | = 100000 J/m² | = 0.1 MJ/m² |
| 1000 kJ/m² | ≈ 88.05509184 BTU/ft² | = 1000000 J/m² | = 1 MJ/m² |
Where the kilojoule per square meter fits
The next smaller heat density unit is the joule per square meter (J/m²). 1 kJ/m² = 1000 J/m², and 1 J/m² = 0.001 kJ/m².
The next larger heat density unit is the BTU per square foot (BTU/ft²). 1 kJ/m² ≈ 0.08805509184 BTU/ft², and 1 BTU/ft² ≈ 11.35652668 kJ/m².
Frequently asked questions
- How many BTUs per square foot are in one kilojoule per square meter?
- One kilojoule per square meter ≈ 0.08805509184 BTU/ft² (BTUs per square foot).
- How many joules per square meter are in one kilojoule per square meter?
- One kilojoule per square meter = 1000 J/m² (joules per square meter).
- How many megajoules per square meter are in one kilojoule per square meter?
- One kilojoule per square meter = 0.001 MJ/m² (megajoules per square meter).