Calcento is a growing set of free workplace calculators for the everyday math of work pay raises, overtime, PTO accrual, employee turnover, and the real cost of turnover. What makes it different: every calculator shows the formula and explains it in plain English, so you understand the result instead of just trusting a black box. No account, no email, no spreadsheet type your numbers and the answer updates instantly. Built by an HR manager with 10+ years