Kilojoules per millimeter to joules per millimeter
Type a value in kJ/mm to get it in J/mm instantly.
1,200J/mm
That's 2× as hot as sheet metal welding, while structural welding is 1.25× higher. A 200 A, 25 V arc would have to travel about 200 mm a minute.
What it means
How much heat goes in?
Heat input is arc energy times a process efficiency: about 0.8 for stick and MIG, 0.6 for TIG, and 1.0 for submerged arc.
The math
How to convert kJ/mm to J/mm
To convert kilojoules per millimeter to joules per millimeter, multiply by 1,000.
Example: 1.2 kJ/mm × 1,000 = 1,200 J/mm.
In the other direction, 1 J/mm = 0.001 kJ/mm.
Every unit
Your heat input in every unit
Tables
kJ/mm to J/mm conversion table
| kJ/mm | J/mm |
|---|---|
| 0.2 kJ/mm | 200 J/mm |
| 0.4 kJ/mm | 400 J/mm |
| 0.6 kJ/mm | 600 J/mm |
| 0.8 kJ/mm | 800 J/mm |
| 1 kJ/mm | 1,000 J/mm |
| 1.5 kJ/mm | 1,500 J/mm |
| 2 kJ/mm | 2,000 J/mm |
| 2.5 kJ/mm | 2,500 J/mm |
| 3 kJ/mm | 3,000 J/mm |
| 4 kJ/mm | 4,000 J/mm |
| 5 kJ/mm | 5,000 J/mm |
J/mm to kJ/mm conversion table
| J/mm | kJ/mm |
|---|---|
| 0.2 J/mm | 0.0002 kJ/mm |
| 0.4 J/mm | 0.0004 kJ/mm |
| 0.6 J/mm | 0.0006 kJ/mm |
| 0.8 J/mm | 0.0008 kJ/mm |
| 1 J/mm | 0.001 kJ/mm |
| 1.5 J/mm | 0.0015 kJ/mm |
| 2 J/mm | 0.002 kJ/mm |
| 2.5 J/mm | 0.0025 kJ/mm |
| 3 J/mm | 0.003 kJ/mm |
| 4 J/mm | 0.004 kJ/mm |
| 5 J/mm | 0.005 kJ/mm |
Quick answers
Quick answers
- How many J/mm is 1 kJ/mm?
- 1 kJ/mm is 1,000 J/mm.
- How many J/mm is 10 kJ/mm?
- 10 kJ/mm is 10,000 J/mm.
- How many J/mm is 1.2 kJ/mm?
- 1.2 kJ/mm is 1,200 J/mm.
The units
About these units
Kilojoules per millimeter (kJ/mm)
The standard for welding procedure specifications.
Joules per millimeter (J/mm)
For thin sheet and micro-welding.
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