Thermal Resistance Converter - Convert K/W, °C/W, °F·h/BTU & More Units
Result:
1 K/W = 0.5275279 °F·h/BTU
How Thermal Resistance Conversion Works
Input Value
Enter thermal resistance value
Select Units
Choose from and to units
Convert
Apply conversion formula
Thermal Resistance Formulas
Basic Formula
Where: R = thermal resistance, ΔT = temperature difference, Q = heat flow
Conduction Formula
Where: L = thickness, k = thermal conductivity, A = area
Convection Formula
Where: h = heat transfer coefficient, A = surface area
Series Resistance
Total resistance in series configuration
Thermal Resistance Conversion Table
| K/W | °C/W | °F·h/BTU | °R·h/BTU | m²·K/W | cm²·K/W |
|---|---|---|---|---|---|
| 0.01 | 0.01 | 0.0053 | 0.0053 | 0.01 | 100 |
| 0.05 | 0.05 | 0.0264 | 0.0264 | 0.05 | 500 |
| 0.1 | 0.1 | 0.0528 | 0.0528 | 0.1 | 1000 |
| 0.2 | 0.2 | 0.1055 | 0.1055 | 0.2 | 2000 |
| 0.5 | 0.5 | 0.2638 | 0.2638 | 0.5 | 5000 |
| 1 | 1 | 0.5275 | 0.5275 | 1 | 10000 |
| 2 | 2 | 1.0551 | 1.0551 | 2 | 20000 |
| 5 | 5 | 2.6376 | 2.6376 | 5 | 50000 |
| 10 | 10 | 5.2753 | 5.2753 | 10 | 100000 |
| 20 | 20 | 10.5506 | 10.5506 | 20 | 200000 |
| 50 | 50 | 26.3764 | 26.3764 | 50 | 500000 |
| 100 | 100 | 52.7528 | 52.7528 | 100 | 1000000 |
| 200 | 200 | 105.5056 | 105.5056 | 200 | 2000000 |
| 500 | 500 | 263.7640 | 263.7640 | 500 | 5000000 |
| 1000 | 1000 | 527.5279 | 527.5279 | 1000 | 10000000 |
Thermal Resistance Units Progression Chart
0.1 K/W
0.5 K/W
1 K/W
2 K/W
5 K/W
10 K/W
Practice Problems
Problem 1:
Convert 2.5 K/W to °F·h/BTU
Solution: 2.5 × 0.5275279 = 1.319 °F·h/BTU
Problem 2:
Convert 1.5 °F·h/BTU to K/W
Solution: 1.5 ÷ 0.5275279 = 2.844 K/W
Problem 3:
Calculate thermal resistance: ΔT = 75°C, Q = 150W
Solution: R = 75°C ÷ 150W = 0.5 K/W
Problem 4:
Wall: L=0.2m, k=0.8 W/m·K, A=10m²
Solution: R = 0.2 ÷ (0.8 × 10) = 0.025 K/W
Problem 5:
Series resistances: R₁=0.1, R₂=0.3, R₃=0.2 K/W
Solution: R_total = 0.1 + 0.3 + 0.2 = 0.6 K/W
Daily Uses of Thermal Resistance
Building insulation design for energy efficiency and comfort
Electronic component cooling and heat sink design
HVAC system design and thermal load calculations
Thermal interface materials selection for electronics
Industrial process heat exchanger design and optimization