This repository contains the R-script to calculate soil organic carbon (SOC) and nitrogen (N) stocks for Arctic river deltas that is based on 1640 soil samples from 156 soil cores in 17 different Arctic river deltas. The code is separated into seven different scripts including the download of input data from PANGAEA (https://doi.org/10.1594/PANGAEA.967651), the estimation for sediment deposit thickness of Arctic deltas, the calculation of a carbon depth decay model and finally the calculation of the SOC and soil N stocks for deposits to a depth of 65m. The input data does not only consist of soil C and soil N data but includes estimates on ice-wedge content, active layer thickness, permafrost distribution, and water area. In addition, the basis for the extent of Arctic river deltas is based on a geospatial data set that mapped 211 Arctic river deltas (https://doi.org/10.1594/PANGAEA.968908) The results of these calculations are published in:Fuchs et al. (2026). Large stocks of permafrost soil organic carbon and nitrogen in Arctic river deltas, Nature Communications, https://doi.org/10.1038/s41467-026-73092-2 For more information about the script, please access the README.txt file