HPLC Calculator
Estimate column volume, void time, linear velocity, retention factors and chromatographic resolution
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Your explanation appears here
Real HPLC performance also depends on particle size, temperature, extra-column volume, gradient delay and detector settings.
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Stress-test the method by changing flow rate and peak spacing without changing your main result.
Calculate your baseline first
For baseline peak widths, resolution is calculated as twice the difference in retention times divided by the sum of the two peak widths. A value near or above 1.5 commonly indicates baseline separation.
Void time estimates how long an unretained compound takes to pass through the column. Here it is estimated from column geometry, porosity and mobile-phase flow rate.
No. Higher flow shortens run time but can increase pressure and may reduce efficiency depending on particle size, viscosity and the column's optimal linear velocity.
Results are estimates generated locally from the column, flow and peak values you enter. Actual HPLC performance depends on instrument dwell volume, pressure limits, solvent viscosity, temperature, particle size, gradient conditions, detector response and data-system integration. Verify calculations against your validated method, instrument documentation and laboratory procedures before analytical use.
