The calculator allows police officers to see an illustration of their projected pension benefits. 

The Home Office states that this calculator will provide an illustration of a police pension at a chosen retirement age. The results shown are only estimates, based on inputs and other assumptions. This calculator is for guidance purposes and is an estimate only. It is not intended to provide financial advice. If a person requires financial advice, they should contact an independent financial adviser.

The page containing the spreadsheet calculator is here.