Chromatography Resolution Calculator
Calculate two-peak baseline-width resolution, retention factors and Gaussian plate estimates.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Keep baseline width distinct from half-height width and convert all entered times consistently.
Rs=2(tR2−tR1)/(w1+w2); N=16(tR/wbaseline)²; k=(tR−t0)/t0
Worked example
Retention times 5 and 6 min with baseline widths 0.4 and 0.6 min give Rs=2. The plate estimates are 2500 and 1600.
Assumptions and input details
Require later retention > earlier retention > dead time. Ideal Gaussian baseline-width plate formula; no peak-fitting, half-height conversion, system suitability threshold or actual chemical separation claim.
Unit definitions
Unit selection is independent of language. Each selector contains only units for its physical quantity. Calculations use defined base units internally.
Choose from 23 length definitions, including explicitly labelled regional measures. Area conversions square the length factor; geometric volumes cube it.
Regional measures are not interchangeable merely because their names look similar. This is a documented selection, not a claim to include every historical unit.
NIST measurement tables · Japanese traditional units · Mainland China and Hong Kong unit distinctions
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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