Suggest a Calculator, Formula of Conversion If you have any ideas for calculators, formulas or conversion tools that you think we should have on our site, please let us know. We will try to incorporate your suggestions as early as possible. The usual time taken to add new suggested features is 2-4 days depending upon the complexity. Please send in your suggestion at contact@calculatorslive.com. Please try to provide as much information as possible about the functionality and features of the calculator, formula or conversion tool that you would like added.