Binding Affinity Calculator
Calculate binding affinity parameters including Kd, Ka, and Gibbs free energy of binding
Binding Parameters
Standard: 298.15 K (25C)
Association Constant (Ka)
1.000e+8 M-1
Delta G
-45.66 kJ/mol
Fraction Bound
90.10%
Kd in Molar
1.000e-8 M
Affinity Classification
High affinity (nanomolar)
Key Relationships
- Ka = 1/Kd
- deltaG = RT ln(Kd)
- Lower Kd = Higher affinity
- More negative deltaG = Stronger binding
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.