Biophysics Calculators

Biophysics calculators help researchers, students, and lab technicians estimate molecular and microfluidic parameters. Quickly compute diffusion coefficients, forces, collision frequencies, thermal energies, and optical trap properties.

These tools also cover membrane mechanics, microfluidic Reynolds numbers, shear stress, and hydrodynamic drag on cells. Use them to streamline experimental planning and analysis with precise estimations.

⚠ Disclaimer: These calculators use standard formulas and simplified assumptions. They are intended for educational purposes only and should not replace experimental measurements or professional guidance.

Diffusion Coefficient

Temperature (K) Viscosity (Pa·s) Radius (m)

Viscosity Effect

Base Diffusion (m²/s) Ref Viscosity New Viscosity

Force in Electric Field

Charge (C) Field (V/m)

Collision Frequency

Number Density (1/m³) Cross-section (m²) Velocity (m/s)

Thermal Energy (kBT)

Temperature (K)

Optical Trap Stiffness

Force (N) Displacement (m)

Membrane Tension → Curvature

Tension (N/m) Bending Rigidity (J)

Reynolds Number

Density (kg/m³) Velocity (m/s) Length (m) Viscosity (Pa·s)

Shear Stress

Viscosity (Pa·s) Shear Rate (1/s)

Hydrodynamic Drag

Viscosity (Pa·s) Radius (m) Velocity (m/s)