This chromatography resolution calculator computes peak resolution (Rs) using retention times and peak widths for two adjacent peaks. Suitable for GC and HPLC method optimization and system suitability evaluation.
Chromatography Resolution Calculator Interface
Reference Formula
For half-height width:
\[ R_s = \frac{2 \times {(t_{R2} – t_{R1})}} {1.699 \times {(w_{1/2,1} + w_{1/2,2})}} \]For baseline width:
\[ R_s = \frac{2 \times {(t_{R2} – t_{R1})}} {w_1 + w_2} \]Before You Go
For baseline separation, a resolution (Rs) of 1.5 or greater is generally recommended. Use this calculator during method development to optimize selectivity, efficiency, and separation performance.
The article explaining how this calculator works will be published soon at GC Hardware.
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If you frequently work with gas chromatography, don’t forget to explore our full collection of Free GC Calculators.