Biot Number Calculator

Biot Number (Bi):

Heat Transfer Coefficient (h):

Characteristic Length (L_c):

Thermal Conductivity (k):

How This Is Calculated

$$ Bi = \frac{ h L_c}{k} $$ where:

Bi = Biot Number (Dimensionless)

h = Heat Transfer Coefficient (W/m²K)

L_c = Characteristic Length (m)

k = Thermal Conductivity (W/mK)

Assumptions

The material is isotropic.
The material is homogeneous.
Steady flow conditions.
Negligible radiative heat transfer.

Related Calculators

Darcy Number

Froude Number

Mach Number

Reynolds Number

Weber Number