CoastalTools is a software package written in Matlab™ to load, manipulate, analyse and plot timeseries data of the sort held by the Channel Coastal Observatory (CCO) and the British Oceanographic Data Centre (BODC). It is not intended to replace database utilities such as SANDS™. Instead it allows the user to rapidly load CCO and BODC data sets (typically waves, tides and beach profiles) and to examine derived properties, such as inshore energy, alongshore drift, beach volume change, etc. The models used are relatively simple and not intended as a substitute for more detailed coastal process modelling. However, they are sufficient for rapid assessments and to research such things as storminess, the influence of clustering, beach dynamics, spatial and temporal change, etc. The code is Open Source and issued under a GNU General Public License. For further details, online manual and to download the software see: http://www.coastalsea.uk/#download-page