Thermodynamics / Information Theory

Entropy Calculator

Calculate thermodynamic entropy changes (ΔS = Q/T) or information entropy (Shannon entropy).

Thermodynamic Entropy (ΔS = Q/T)

Heat transferred Q (J)

Temperature T

Process Type

Shannon Information Entropy

Text (entropy of character distribution)

Thermodynamic: ΔS = Q/T (reversible process) · ΔS > Q/T (irreversible)
Shannon: H = −Σ p_i × log₂(p_i) · Units: bits per character