Conversion of rainrate statistics from different integration times to 1 min is studied using 6 years (2007–2011, 2013) of disdrometric rainrate data over a tropical coastal station, Thiruvananthapuram (, ), and an inland station, Gadanki ( , ), India. In this study, we used two established empirical models, namely Chebil and Segal, for deriving the conversion factors suitable for these stations. Results show that the Chebil model performs better than the Segal model over these locations for the conversion of different integration times to 1-min rainrate statistics. The 1-min rainrate statistics for the two sites are also estimated for different integration times using the ITU-R P. 837-6 method. Prediction performance of the Chebil model is assessed and is compared to ITU-R Rec P. 837-6. Chebil form is observed to be consistent up to time of the exceedance in a year. The results suggest that the ITU-R model needs to be suitably modified for the study region.