Thermal Graphite Sheet Calculator

Calculate thermal resistance, temperature rise, and heat spreading for graphite thermal interface sheets

Graphite Sheet

Heat Source

W

Interface

mm²·K/W
Design looks good
Effective Cooling
1.102
Total Thermal Resistance (°C/W)
5.51
Temperature Rise (°C)
5.00
Heat Flux (W/cm²)
Q = 5 W30 × 30 mm10×10t = 0.1 mmΔT = 5.51 °CR_total = 1.102 °C/W0.090 g

Temperature Rise vs. Heat Load

ΔT
Heat Flux
Operating Point

Created by Catlynn Nguyen & Jie Chai · 2026