The Sanitary Facilities Calculator assists to better understand and apply the sanitary and other facilities DTS Provisions in NCC Volume One Part F2. The calculator provides the required number of sanitary facilities including (where applicable) closet pans, wash basins, urinals, showers and baths based on building type and number of occupants. It also assists to calculate the required number of accessible unisex sanitary facilities. The calculator is a MS Excel file, using data from NCC Volume One for the calculations. It was created and designed for Excel 2013 for Windows 10. Compatibility with other versions and operating systems is not guaranteed. The calculator contains macros, so these will need to be enabled to function correctly. A help guide is available in the calculator, and provides an example of how to use it.