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We use a new compilation of the hadronic R-ratio from available data for the process e + e - hadrons below the charm mass to determine the strong coupling s , using finite-energy sum rules. Quoting our results at the mass to facilitate comparison to the results obtained from similar analyses of hadronic -decay data, we find s (m 2 ) = 0.298 0.016 0.006 in fixed-order perturbation theory, and s (m 2 ) = 0.3040.0180.006 in contour-improved perturbation theory, where the first error is statistical, and the second error combines various systematic effects. These values are in good agreement with a recent determination from the OPAL and ALEPH data for hadronic decays. We briefly compare the R(s)-based analysis with the -based analysis.