Heat Transfer Coefficient conversion
1 watt/square meter/k (W/(m²·K)) equals 1 joule/square meter/second/k (J/(m²·s·K)). Enter any value below to convert from W/(m²·K) to J/(m²·s·K).
Enter a value and choose units. Results update instantly.
1 W/(m²·K) = 1 J/(m²·s·K)
| Unit | Value |
|---|---|
| Watt/square meter/K W/(m²·K) | 1 |
| Watt/square meter/°C W/(m²·°C) | 1 |
| Joule/square meter/second/K J/(m²·s·K) | 1 |
| Joule/square meter/second/°C J/(m²·s·°C) | 1 |
| Calorie (IT)/square meter/second/°C cal/(m²·s·°C) | 0.0000238846 |
| Kilocalorie (IT)/square meter/hour/°C kcal/(m²·h·°C) | 0.8598452279 |
| Btu (IT)/square foot/second/°F Btu/(ft²·s·°F) | 0.0000489195 |
| Btu (IT)/square foot/hour/°F Btu/(ft²·h·°F) | 0.1761101838 |
Formula
Use this relationship for a direct conversion:
2 W/(m²·K) = 2 J/(m²·s·K).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Watt/square meter/K (W/(m²·K)) | Joule/square meter/second/K (J/(m²·s·K)) |
|---|---|
| 0.01 | 0.01 |
| 0.1 | 0.1 |
| 1 | 1 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 25 | 25 |
| 50 | 50 |
| 100 | 100 |
| 1,000 | 1,000 |
From unit
Watt/square meter/K (W/(m²·K)) is the base unit of Heat Transfer Coefficient in the International System of Units (SI).
Symbol: W/(m²·K)
To unit
Joule/square meter/second/K (J/(m²·s·K)) is the base unit of Heat Transfer Coefficient in the International System of Units (SI).
Symbol: J/(m²·s·K)
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete heat transfer coefficient converterQuestions
Use the formula J/(m²·s·K) = W/(m²·K) x 1. 1 watt/square meter/k (W/(m²·K)) equals 1 joule/square meter/second/k (J/(m²·s·K)).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
