How it works
Convert thermal conductivity between SI-based units. A kelvin temperature difference has the same magnitude as a Celsius difference.
result = value × source factor / destination factor
Worked example
Show example inputs and result
Value: 100 · From unit: W/(m·K) · To unit: mW/(m·K).
- Converted value
- 100,000 mW/(m·K)
Questions and answers
Which unit convention is used?
Convert thermal conductivity between SI-based units. A kelvin temperature difference has the same magnitude as a Celsius difference.
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Conversion reference: NIST SI Guide
Method reviewed: October 8, 2026 · Methods & accuracy